whether的用法和例句
2个回答

1 在动词不定式之前只能用whether .如:

例8 I can't decide whether to stay.我不能决定是否留下.

2 在whether …… or not 的固定搭配中.如:

例9 I want to know whether it's good news or not .我想知道是否是好消息.

3 在介词后,只能用whether.如:

例10 His father is worried about whether he lose his work .他的父亲担心是否会失去工作.

4宾语从句放在句首表示强调时,只能用whether .如:

例11 Whether they can finish the work on time is still a problem .他们是否能准时完成这项工作还是个问题.

5用if会引起歧义时,只用whether.如:

例12 Could you tell me if you know the answe