KR102542662B1 - Dialogue system for foreign language conversation - Google Patents

Abstract

A question-and-answer DB including a plurality of questions on a subject and a plurality of answers to each of the plurality of questions, a first replacement including first replacement phrases that can be replaced with parts of answer sentences in the plurality of answers A phrase DB, and a first control unit for displaying the plurality of questions, the plurality of answers, and the first replacement phrases on a learner terminal, wherein the first control unit converts the plurality of answers to the first replacement phrases. Some of the answer sentences that can be replaced are displayed to be distinguished from other parts, the plurality of answers have different contents, and the first replacement phrases change part of the answer sentences to change the contents of the answer in detail. Characterized in that Provides a foreign language conversation system.

Description

Foreign language conversation system {DIALOGUE SYSTEM FOR FOREIGN LANGUAGE CONVERSATION}

The present invention relates to a foreign language dialogue system, and more particularly, to a foreign language dialogue system that provides learners with customized dialogue examples.

In recent years, the number of people who learn foreign language conversations using video or telephone is increasing. And most of the learners practice conversation with a native speaker or other learners based on pre-written questions and answers. However, since these answers are predetermined, there is a problem in that the learner cannot select an answer that is suitable for him or her.

Korean Patent Publication No. 10-2012-0085465 "Foreign Language Conversation System" and Korean Patent Publication No. 10-2011-0122628 "Conversation System" suggest a conversation system capable of having a conversation in a foreign language. However, the above-mentioned dialogue systems assume that a given dialogue example is simply provided, and the learner cannot select an answer suitable for himself.

Korean Patent Publication No. 10-2009-0058320 proposes an "example-based conversation system and method for foreign language conversation education" that selects and provides conversation examples most suitable for learners' utterance intentions. This method of provision provides conversation examples that are more in line with learners' intentions. However, the dialogue examples provided in this way are also fixed and cannot be changed, so there is still a problem in that learners cannot specifically express what they want to answer.

Korean Patent Publication No. 10-2012-0085465 Korean Patent Publication No. 10-2011-0122628 Korean Patent Publication No. 10-2009-0058320

An object of the present invention is to provide a foreign language dialogue system in which learners can change dialogue examples to suit themselves.

Another object of the present invention is to provide a foreign language dialogue system in which learners can create their own dialogue examples.

In addition, an object of the present invention is to provide a foreign language conversation system in which learners can provide conversation examples including questions in various ways.

Other detailed objects of the present invention will be clearly identified and understood by experts or researchers in the art through the specific contents described below.

In order to achieve the above object, the present invention is a question and answer DB including a plurality of questions on a subject and a plurality of answers to each of the plurality of questions; a first replacement phrase DB including first replacement phrases that can be replaced with parts of response sentences in the plurality of answers; and a first controller that displays the plurality of questions, the plurality of answers, and the first replacement phrases on a learner terminal, wherein the first controller can replace the plurality of answers with the first replacement phrases. A foreign language conversation system characterized in that some of the response sentences are displayed to be distinguished from other parts, the plurality of answers have different contents, and the first replacement phrases change parts of the answer sentences to change the contents of the answer in detail. provides

In addition, the present invention further includes a second control unit that receives a plurality of questions, a plurality of answers, and first replacement phrases selected from the learner terminal, and the second control unit receives the selected first replacement phrases from the selected plurality of answers. Replaces answers that need to be changed with the selected first replacement phrases, and provides a foreign language conversation system characterized in that the selected plurality of questions, changed answers, and unchanged answers are displayed on the learner terminal.

In addition, the present invention provides an additional answer DB including a plurality of additional answers in which the plurality of answers and contents are connected; and a second replacement phrase DB including second replacement phrases that can be replaced with parts of additional answer sentences in the plurality of additional answers, wherein the first control unit controls the plurality of questions and the plurality of answers. , The first replacement phrases, the plurality of additional answers, and the second replacement phrases are displayed on the learner terminal, and some of the additional answer sentences that can be replaced with the second replacement phrases in the plurality of additional answers are Displayed to be distinguished from other parts, the plurality of additional answers are different in content, and the second replacement phrases change a part of the additional answer sentences to change the additional answer content in detail. Provide a foreign language conversation system, characterized in that .

In addition, the present invention further includes a second control unit that receives inputs of a plurality of questions, a plurality of answers, first replacement phrases, a plurality of additional answers, and second replacement phrases selected from the learner terminal, wherein the second control unit receives the input of the selected Answers that need to be changed from the plurality of answers to the selected first replacement phrases are replaced with the selected first replacement phrases, and additional answers that need to be changed from the selected plurality of additional answers to the selected second replacement phrases are recalled. A foreign language conversation system characterized by replacing the selected second replacement phrases and displaying the selected plurality of questions, changed answers, unchanged answers, changed additional answers, and unchanged additional answers on the learner terminal. to provide.

In addition, the present invention provides a foreign language conversation system characterized in that the plurality of questions include two or more different types of questions for the same or similar content.

Using the dialogue example of the foreign language dialogue system according to the present invention, learners meeting for the first time can have a smooth conversation, and even beginners who are not good at speaking a foreign language can ask and answer questions in a foreign language.

In addition, learners can learn subject-related vocabulary and various expressions through conversation examples including multiple questions and answers related to a given subject.

In addition, the learner can learn foreign language conversation by changing a conversation example to a content suitable for him or her by replacing a part of a foreign language sentence with a replacement phrase. In this way, learning effect can be improved by practicing foreign language conversation with one's own story.

In addition, learners can create their own conversation examples according to various experiences related to an arbitrary topic, so that they can learn foreign language conversation without getting bored.

In addition, the learner can learn how to give a long answer as well as a short answer by using the additional answer of the conversation example, and how to ask various questions through multiple questions.

In addition, the learner knows which part of the sentence changes to change the content through the answer sentence in which the replaceable part is displayed. In addition, the learner learns to change the contents of the answer sentence in detail using the replacement phrase, and through the process of changing it, it is possible to learn about foreign language composition naturally.

1 shows that learners have a conversation using a foreign language conversation system.
Figure 2 shows conversation example sentences required when learners have a conversation about an arbitrary topic.
3 shows conversation example sentences for each learner.
FIG. 4 shows a dialogue example sentence in which an additional answer and a second replacement phrase are added to the dialogue example sentence of FIG. 2 .
5 shows conversation example sentences for each learner in which a changed additional answer is added to the conversation example sentence for each learner in FIG. 3 .

The accompanying drawings show applied embodiments of the present invention, and the technical idea of the present invention should not be construed as limited through the accompanying drawings. If it can be interpreted from the point of view of experts belonging to the technical field of the present invention that some or all of the drawings shown in the drawings are not necessarily required for the practice of the invention, this does not limit the invention described in the claims.

In the following description, an embodiment of the present invention has been described by taking English as an example among foreign languages, but the present invention is not limited to English. That is, the present invention can be applied to other foreign languages such as Japanese and Chinese. In addition, the 'replacement phrase' used below includes a word, a phrase representing a fragment in which two or more words are gathered to form a component of a clause or sentence, or an independent sentence. That is, if a part of the answer content can be changed, all of them are included in the replacement phrase regardless of the name.

In addition, the network may be a wired network or mobile network such as a telecommunications network including the Internet, a Local Area Network (LAN), a Wide Area Network (WAN), or a Value Added Network (VAN). It includes all types of wireless networks, such as mobile radio communication networks or satellite communication networks. In addition, learner terminals include all kinds of devices that can input and check various contents such as text, video, and voice by connecting to a network such as a smartphone, PDA, and computer.

Referring to FIGS. 1 to 5 , English video chatting using a foreign language conversation system according to an embodiment of the present invention will be described.

1 shows learners video chatting through a foreign language conversation system. Referring to FIG. 1 , learners 100 and 110 communicate in English using a foreign language conversation system 130 connected through a network 120 . The foreign language conversation system 130 provides the conversation example of FIG. 2 to the learner terminals 101 and 111 so that the learners 100 and 110 can have a smooth conversation.

Figure 2 shows an example of a conversation required when learners have a conversation about an arbitrary subject. Referring to FIG. 2 , an example conversation 200 includes a question 210, an answer 220, and a first replacement phrase 230 capable of changing part of the answer 220 related to the subject of 'restaurant'. The question 210, the answer 220, and the first replacement phrase 230 of the conversation example 200 represent only a part of the whole, and the actually provided conversation example includes more questions, answers, and first replacement phrases. .

The manner in which the learners 100 and 110 have a conversation using the conversation example 200 is as follows. For example, if the learner 100 asks a question based on the question 210 of the conversation example 200 displayed on the learner terminal 101, another learner 110 responds to the conversation example 200 displayed on the learner terminal 111. Answer based on the answer (220) of. By using the questions and answers given in this way, learners who meet for the first time can continue the conversation smoothly. Moreover, by using the dialogue example 200, beginners who find it difficult to ask and answer questions in English can have a conversation in English.

Referring to FIG. 1 , a foreign language conversation system 130 includes a question answer DB 131 , a first replacement phrase DB 132 , and a first control unit 133 .

The question answer DB 131 includes a question 210 composed of a plurality of questions 211, 212, and 213 required when the learners 100 and 110 have a conversation by asking and answering about an arbitrary topic, and each question It includes an answer 220 consisting of a plurality of answers 221, 222, and 223 for Here, the answer sentences constituting the plurality of answers are sentences having different contents or meanings. For example, there are four sentences in the first answer 221, but the contents of the answers are different. Similarly, there are four sentences in answer number 2 (222), but the contents are different. Therefore, the learner can answer by selecting a sentence containing the expression he/she wants to use or a sentence suitable for his or her situation.

The first replacement phrase DB 132 includes the first replacement phrase 230 composed of replacement phrases 231 , 232 , and 233 . The number 1 replacement phrase 231 means a word, phrase, clause, etc. that can change the part marked with red letters among the sentences of the number 1 answer 221. In FIG. 2, the changeable parts of the answer 220 sentences are marked with red letters, but the changeable parts can be displayed to be distinguished from other parts in various ways other than using different colors. Here, the parts that can be changed are shown in bold letters.

For example, in answer 1 (221), " I often go to a place called Geulinnae."" I often go", the bold part of the sentence, is replaced with " I sometimes go " or " On special occasions, I go " in the number 1 replacement phrase (231). " can be changed to As above, by changing the bold part of the answer sentence to a replacement phrase, the answer content can be changed in detail. In addition, the learner knows which part of the sentence changes to change the content through the answer sentence in which the replaceable part is displayed. In addition, learners can learn English composition naturally through the process of changing answer sentences into replacement phrases.

Although the question answer DB 131 and the first replacement phrase DB 132 are distinguished here for convenience of explanation, the question answer DB 131 and the first replacement phrase DB 132 may be included in one DB.

The first controller 133 transfers the questions 210 and answers 220 stored in the question answer DB 131 and the first replacement phrase 230 stored in the first replacement phrase DB 132 to the learner terminals 101 and 111. ) as a dialogue example (200). In addition, the first control unit 133 displays the parts that can be changed as the first replacement phrases 230 among the sentences of the answer 220 to be distinguished from the rest. Here, various methods other than using different colors may be used as the classification display method.

Referring to FIG. 1 , the foreign language conversation system 130 may further include a second control unit 134.

The second controller 134 receives the questions, answers, and replacement phrases selected by the learner from among the question 210, the answer 220, and the first replacement phrase 230, and includes the selected question and changed answer. Display example conversations for each learner on the learner terminal. The question 210, answer 220, and first replacement phrase 230 of the conversation example 200 are provided so that the learner can select questions, answers, and replacement phrases suitable for him or her by clicking or the like. That is, the learner can select one sentence suitable for himself/herself from question 1 (211) containing two sentences, and can select one sentence from answer #1 (221) containing four sentences, and " I One of the first replacement phrases 231 including three replacement phrases such as " sometimes go", "On special occasions, I go ", and " Do you know " may be selected.

For example, the learner 100 selects "Do you know any good restaurants?", "Can you tell me where it is?", and "How do you get there?" from among the questions 211, 212, and 213. Among the answers (221, 222, 223), " I often go to a place called Geulinnae.", "It's in the middle of Jongno's food alley, It's not easy to find .", "Take the subway to Hongdae Station." Then take Bus No. 3 from Exit 8 .", select " On special occasions, I go ", " at the beginning ", "It's easy to spot ", " get out through Exit 8 and walk about 10 minutes ” is selected, the second control unit 134 provides a diagram including questions selected by the learner and changed answers in which changeable parts among selected answer sentences are replaced with selected replacement phrases. The conversation example 300 for each learner in 3 is displayed on the learner terminal 101. If the learner selects an answer sentence without a replacement phrase or does not select a replacement phrase, the selected answer sentence is displayed without change. In addition, when the second control unit 134 displays on the learner terminal 101, an English sentence and a corresponding Korean sentence may be displayed together as shown in FIG. 3, or only an English sentence may be displayed as shown in FIG. 5.

It should be noted here that the first replacement phrase 231 is indicated as "◈ I often go → I sometimes go | On special occasions, I go ", "◈ Have you heard of → Do you know ". This means that " I often go " and interchangeable phrases are " I sometimes go " or " On special occasions, I go ", and " Have you heard of " and interchangeable phrases are " Do you know ". Therefore, the learner (100) in the first answer (221) If " I often go to a place called Geulinnae." is selected and " Do you know " is selected in the first replacement phrase 231, the second control unit 134 displays an error indicating that the wrong choice was made by sound or text and " Make sure "Do you know " is not selected. As described above, this is because " I often go " cannot be changed to " Do you know ".

Although the first control unit 133 and the second control unit 134 are distinguished here for convenience of explanation, the first control unit 133 and the second control unit 134 may be included in one control unit.

Therefore, the learner selects questions, answers, and first replacement phrases suitable for him or her from the question 210, the answer 220, and the first replacement phrase 230 of the conversation example 200, and as shown in FIG. It is possible to have a conversation by creating a conversation example 300 for each learner. In this way, if you create your own conversation example and have a conversation, it is easy to remember because the conversation itself is your own story, not something unrelated to you. And since you're talking about yourself, it has the same effect as actually having a conversation. In addition, learners can create several conversation examples of their own according to various experiences. In other words, it is not boring because you can have a conversation with various stories. And through various answers and replacement phrases, you can learn various expressions related to conversation topics. As a result, it is possible to learn English conversation more effectively by using the above-described conversation example 200 than by learning English conversation with textbooks with contents unrelated to oneself.

Referring to FIG. 1 , the foreign language conversation system 130 may further include an additional answer DB 135 and a second replacement phrase DB 136 . In this case, the foreign language conversation system 130 displays the conversation example of FIG. 4 on the learner terminals 101 and 111.

FIG. 4 shows a conversation example in which an additional answer and a second replacement phrase are added to the conversation example of FIG. 2 .

Referring to FIG. 4 , a conversation example 400 is a question 210, an answer 220, a first replacement phrase 230, an additional answer 410, and a part of an additional answer 410 related to the subject of 'travel'. It includes a second replacement phrase 420 that can change . That is, the conversation example 400 of FIG. 4 further includes an additional answer 410 and a second replacement phrase 420 in addition to the conversation example 200 of FIG. 2 . In addition, the question 210, the answer 220, the first replacement phrase 230, the additional answer 410, and the second replacement phrase 420 of the conversation example 400 represent only parts of the whole, and are actually provided dialogue. Examples include more questions, answers, first replacements, additional answers, and second replacements.

The additional answer DB 135 includes an additional answer 410 composed of a plurality of additional answers 411 and 412 in the conversation example 400 . Here, the answer sentences constituting the plurality of additional answers are sentences having different contents or meanings. For example, there are four sentences in the first additional answer 411, but the contents of the answers are different. Likewise, there are three sentences in the second additional answer (412), but the contents are different. Therefore, the learner can answer by selecting the most suitable sentence for the content he or she wants to answer.

For example, the learner selects "I loved seeing a show on Broadway." in Answer 1 (221), and selects "It was By selecting "fun and exciting.", you can answer "I loved seeing a show on Broadway. It was fun and exciting." By adding additional answers like this, the learner can give a long answer instead of a short answer. In addition, by combining the first answer 221 and the first additional answer 411, it is possible to give various answers. Therefore, if you have a conversation using the conversation example 400 of FIG. 4, you can learn much more various expressions related to the subject than the conversation example 200 of FIG.

The second replacement phrase DB 136 includes a second replacement phrase 420 composed of additional replacement phrases 421 and 422 . The number 1 additional replacement phrase 421 means a word, phrase, clause, etc. that can change the part marked with red letters among the sentences of the number 1 additional answer 411. In FIG. 4, the changeable part of the additional answer 410 sentences is marked with red letters, but the changeable part can be displayed to be distinguished from other parts in various ways other than using a different color. Here, the parts that can be changed are shown in bold letters.

For example, in the additional answer No. 1 (411), "I saw many famous paintings ." The bold text part of the sentence, “ famous paintings, ” can be replaced with “ rare and precious items ” among the replacement phrases (421) added once. In this way, the content of the additional answer can be changed in detail by replacing the bold part of the additional answer sentence with an additional replacement phrase. In addition, the learner learns which part of the sentence is changed through the additional answer sentence in which the replaceable part is displayed, and learns how to change the content in detail through the additional replacement phrase. The learner can learn more expressions related to the conversation topic through the additional answer 410 and the second replacement phrase 420, and can have a pleasant conversation without being bored.

Here, for convenience of explanation, the question answer DB 131, the first replacement phrase DB 132, the additional answer DB 135, and the second replacement phrase DB 136 are classified, but these DBs may be included in one DB. there is.

The first controller 133 stores the questions 210 and answers 220 stored in the question answer DB 131, the first replacement phrase 230 stored in the first replacement phrase DB 132, and the additional answer DB 135. A function of displaying the stored additional answer 410 and the second replacement phrase 420 stored in the second replacement phrase DB 136 on the learner terminals 101 and 111 as the conversation example 400 of FIG. 4 is further included. do. In addition, the first control unit 133 displays the parts that can be changed to the first replacement phrases 230 among the sentences of the answer 220 to be distinguished from the rest, and among the sentences of the additional answer 410, the second replacement phrase 420 ) to mark interchangeable parts to distinguish them from the rest. Here, various methods other than using different colors may be used as the classification display method.

The second controller 134 controls questions, answers, and replacement phrases selected by the learner from among the question 210, the answer 220, the first replacement phrase 230, the additional answer 410, and the second replacement phrase 420. 5, including the selected question, the changed answer, and the changed additional answer, by receiving the input of the selected question, additional answers, and additional replacement phrases, and displaying the conversation example for each learner on the learner terminal. Therefore, the question 210, the answer 220, the first replacement phrase 230, the additional answer 410, and the second replacement phrase 420 of the conversation example 400 are questions tailored to the learner by clicking or the like. s, answers, replacements, additional answers, and additional replacements are provided for selection. That is, the learner can select one sentence suitable for himself/herself from question #1 (211) containing two sentences, and can select one sentence from answer #1 (221) containing five sentences, and "the Fuji rock festival", "Disneyland", etc., and you can select one sentence from No. 1 replacement phrase (231) including two replacement phrases, and you can select one sentence from No. 1 additional answer (411) including four sentences. There is, and one can be selected from among the number 1 additional replacement phrases 421 including two replacement phrases such as “ rare and precious items ” and “ fun and educational ”.

For example, the learner 100 selects "Where would you recommend I visit?" and "Did anything fun happen on the trip?" I recommend the tomato festival .” , “It's not a fun memory.” Exciting .", "I was pickpocketed . I was on a tight budget for rest of the trip.", and if " lost money at the casino " is selected among the additional replacement phrases 421 and 422, the second controller (134) is the questions selected by the learner, the changed answers in which the changeable parts of the selected answers are replaced with the selected replacement phrases, and the changed additional answers in which the changeable parts among the selected additional answers are replaced with the selected additional replacement phrases. It further includes a function of displaying a learner-specific conversation example 500 including If the learner selects a replacement phrase, an answer sentence without an additional replacement phrase, or an additional answer sentence, or if no replacement phrase or additional replacement phrase is selected, the selected answer sentence or additional answer sentence is displayed without change. In addition, when the second control unit 134 displays conversation examples for each learner on the learner terminal 101, an English sentence and a corresponding Korean sentence may be displayed together as shown in FIG. 3, or only an English sentence may be displayed as shown in FIG. 5 there is.

It should be noted here that the number 1 additional replacement phrase 421 is displayed as "◈ famous paintings → rare and precious items ", "◈ fun and exciting → fun and educational ". This means that the interchangeable phrase with " famous paintings " is " rare and precious items ", and the interchangeable phrase with " fun and exciting " is " fun and educational ". Therefore, when the learner 100 selects "I saw many famous paintings ." in the first additional answer 410 and selects " fun and educational " in the first additional replacement phrase 421, the second controller 134 A sound or text error indicates the wrong choice and prevents " fun and educational " from being selected. As described above, " famous paintings " cannot be changed to " fun and educational ".

Although the first control unit 133 and the second control unit 134 are distinguished here for convenience of explanation, the first control unit 133 and the second control unit 134 may be included in one control unit.

Therefore, the learner selects appropriate questions and answers from the question 210, the answer 220, the first replacement phrase 230, the additional answer 410, and the second replacement phrase 420 of the conversation example 400. , Replacement phrases, additional answers, and additional replacement phrases are selected, and as shown in FIG. In this way, if you create your own dialogue example and have a conversation, the learning effect is improved because it is the same as having a real conversation. Furthermore, by using additional answers and additional replacement phrases, it is possible to talk in a variety of rich ways in relation to the topic of conversation.

Referring to FIG. 2 , question 1 211 of the conversation example 200 includes two sentences, both of which ask about “whether you know a restaurant” or “the name of a restaurant”. However, question 1 asked "Do you know ~" as "Do you know any good restaurants?" and question 2 asked "Can you recommend ~" as "Can you recommend a good restaurant?" That is, the two sentences used different questions and used different words or expressions. Question 2 (212) asks for "the location of the restaurant." Number 1 is "Where is it?" and number 2 is "Can you tell me where it is?", and the types of questions and questions are different in the two questions. Question 3 (213) asks "the means of transportation to the restaurant." In question 1, "How do you get there?" and in question 2, "Can I take the bus or subway?", the same or similar questions were asked using different interrogative words and different expressions.

Likewise, referring to FIG. 4 , the two sentences of the first question 211 of the conversation example 400 ask about “a good travel destination”. The two sentences, "What was the most memorable place?" and "Where would you recommend I visit?", were asked questions about the same or similar content using different interrogative words and expressions. Question 2 (212) asks about an episode during the trip. Question 1 is “Tell me about your trip.” and Question 2 is “Did anything fun happen on the trip?” different.

In this way, in the conversation examples 200 and 400, when asking questions about the same or similar content, two or more various question sentences are presented using different interrogative words, different words, different expressions, and different interrogative sentences. Therefore, learners can learn how to ask questions about the same or similar content in various ways.

As described above, if you use the customized conversation example provided by the foreign language conversation system according to the present invention, you can have a conversation with your own story rather than learning English conversation with an English teaching material that is not related to yourself, improving the learning effect. do.

Although the present invention has been described with limited embodiments and drawings, the present invention is not limited thereto by those skilled in the art to which the present invention belongs, the technical idea of the present invention and claims to be described below. Various modifications and variations are possible within the equivalent scope of the scope.

100: learner 101: learner terminal
110: learner 111: learner terminal
120: network 130: foreign language conversation system
131: question answer DB 132: first replacement phrase DB
133: first control unit 134: second control unit
135: Additional answer DB 136: Second replacement phrase DB
200: conversation example 210: question
220: answer 230: first replacement phrase
300: Conversation example for each learner 400: Conversation example
410: additional answer 420: second replacement phrase
500: Examples of conversations for each learner

Claims (5)

a question-and-answer DB including a plurality of questions on a subject and a plurality of answers to each of the plurality of questions;
a first replacement phrase DB including first replacement phrases that can be replaced with parts of response sentences in the plurality of answers; and
A first control unit for displaying the plurality of questions, the plurality of answers, and the first replacement phrases on a learner terminal;
The plurality of answers and the first replacement phrases are written in the native language and the foreign language, and the first control unit displays the native language and the foreign language together when displaying the plurality of answers and the first replacement phrases, and in the plurality of answers Some of the answer sentences that can be replaced with the first replacement phrases are displayed to be distinguished from other parts, the plurality of answers have different contents, and the first replacement phrases change some of the answer sentences so that the contents of the answer can be displayed in detail. A foreign language conversation system characterized by changing to. The method of claim 1,
Further comprising a second control unit for receiving a plurality of questions, a plurality of answers, and first replacement phrases selected from the learner terminal;
The second control unit replaces answers requiring changes in the selected plurality of answers with the selected first replacement phrases with the selected first replacement phrases, and replaces the selected plurality of questions, changed answers, and unchanged answers with the selected first replacement phrases. A foreign language conversation system characterized in that it is displayed on the learner's terminal. The method of claim 1,
an additional answer DB including a plurality of additional answers in which the plurality of answers and contents are connected; and
It further includes a second replacement phrase DB including second replacement phrases that can be replaced with parts of additional answer sentences in the plurality of additional answers;
The first control unit displays the plurality of questions, the plurality of answers, the first replacement phrases, the plurality of additional answers, and the second replacement phrases on the learner terminal, and displays the second replacement phrases in the plurality of additional answers. Some of the additional answer sentences that can be replaced with replacement phrases are displayed to be distinguished from other parts, the plurality of additional answers have different contents, and the second replacement phrases change some of the additional answer sentences to provide additional answer content. A foreign language conversation system characterized by changing in detail. The method of claim 3,
Further comprising a second control unit that receives a plurality of questions, a plurality of answers, first replacement phrases, a plurality of additional answers, and second replacement phrases selected from the learner terminal;
The second control unit replaces answers requiring a change with the selected first replacement phrases in the selected plurality of answers with the selected first replacement phrases, and replaces the selected plurality of additional answers with the selected second replacement phrases. Replacing the additional answers that need to be changed with the selected second replacement phrases, and displaying the selected plurality of questions, changed answers, unchanged answers, changed additional answers, and unchanged additional answers on the learner terminal. Characteristic foreign language conversation system. In the claim of any one of claims 1 to 4,
The foreign language conversation system, characterized in that the plurality of questions include two or more different types of questions for the same or similar content.

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