用英语怎么说“老师，对不起，我没有听懂您说的话。您能换个话题吗？谢谢”。

Sorry,Teacher,I didn't understand the words you said.Can you change a topic?Thanks.

Excuse me,sir,I did not understand your words.Could you change a topic,please?

Sorry,sir.Icn't understand your words.Could you change a topic,please?

sorry Mr.XX i can't understand your words.could you change another subject?

Sorry,Mr/Mrs (Please add the teacher's surname),I didn't catch what you said, can you please change a topic!?

Sorry sirs,I beg your pardon,cud u change to another topic?