【正确答案】Obviously, the teacher is trying to help the student with his English, making him realize a grammatical mistake he has made in his language, that is, it should not be "in teahouse", but "in the teahouse".
In dialogue a), the teacher's response surely will not interrupt the student and hence making the conversation flow quite smoothly, but the weakness is also apparent: The response as an attempt to remind the student of the grammatical mistake he has just made is not clear, the possible result of which is that the student may not realize the mistake he has made.
In dialogue b), the response itself is the right form. This will not only remind the student of the mistake he has made, but also help him master the correct form. At the same time, the conversation flows smoothly. So the response in this dialogue is surely proper.
In dialogue c), the response will immediately drive the student to think about whether he has made a grammatical mistake, but the weakness is also obvious: It will break the conversation.
In dialogue d), the response is absolutely helpful for the student to be aware of the grammatical mistake he has made, but it is too direct and straightforward.

【答案解析】[解析] 本题只要分别就每一个对话中教师的回应的可取之处和不妥之处逐一加以说明即可。即主要是看它对帮助学生意识到错误并改正错误的积极作用或是消极作用。

【正确答案】If I were the teacher, I would surely try to use the response in dialogue b), because it can not only help the student realize the mistake he has made, but also make him clear about what the right form is. At the same time, it is not too direct a response that the student's face is saved; thus he won't be discouraged from speaking English. What's more, it won't break the conversation,

【答案解析】[解析] 本题主要是承接前一题的分析，只要前一题分析得当，此题就会迎刃而解。