肯定回答：即不介意对方做某事时，常用not at all,certainly not,of course not等等。否定回答：即介意对方做某事时，常用I am sorry but...，I am afraid you can't....等等。

1.若表示“不介意”或“同意”时，常用否定形式，如：

①No,of course not.

②No,certainly not.

③No,not at all.

④No,go ahead.

⑤No,do as you like.

⑥No,indeed.

⑦No,please.

⑧No,I don't mind.

⑨No,do it please.

⑩Not in the least.

2.若表示“介意”或“不同意”时，则常用较委婉的方式加以拒绝，如：

①I'm sorry but I do.

②Sorry,you'd better not.

③I'm afraid you can't.

④I wish you wouldn't….

⑤I'm sorry,but it's not allowed….

⑥Yes,I do mind.