1. Sorry, I didn't catch you.对不起，我没听懂你说的。
2. Sorry, I didn't understand.抱歉，我听不懂。
3. Sorry, I didn't get what you said.对不起，我没听懂你说的话。
4. I can't hear you very well.我听不太清楚。
5. I can barely hear you.我几乎听不到你说的。
6. I'm having trouble hearing you.我听不清楚。
7. Pardon?请再说一遍好吗?
8. Excuse me?请再说一遍?
(上列两句都是对不起之意，但用在会话上，如果后面没有接说明，并且语尾上扬，就是要对方再说一次。听到这句话时就要知道对方要自己再说一遍。
9. I beg you pardon?能请你再说一遍吗?(此句有请求对方原谅及再说一次的意思)
10. Could you repeat that, please?能请你再说一遍吗?
11. Would you say that again?你能再说一遍吗?
12. Would you speak more slowly?你能再说慢一点吗?
13. Could you speak up a little?你能在大声一点吗?(speak up 大声说=speak out)
14. Would you speak more clearly?你能再说清楚一点吗?
15. Would you explain more for me?可以为我解释一遍吗?
16. Please speak a little louder.请讲大声一点。
17. Would you slow down, please?请说慢一点好吗?
扩展阅读：
雅思口语考试禁区有哪些?
雅思口语考试说pardon会被扣分吗?
如何应对雅思口语四个月一次的变题期