根据雅思口语建议 即使没有听懂也不要装懂 实在不行就说I am sorry .I didn't follow you .建议你用的句子:Could you please rephrase that question/topic?I'm not exactly sure what you mean...I'm not exactly sure how to answer that question, but (perhaps)...That's a rather difficult question, but (maybe)...I'm sorry, but I don't know much about...However, it might be possible thatMaybe I can answer your question by telling you about a personal experience I 's an interesting question...Let me see. Well, I suppose that...Well, I think there are 2 (or 3 or more) reasonsIn my opinion there are three ways of looking at...Have I given you enough information?Would you like me to tell you more about...?I can't think of anything else right now...