1.whether 的用法。

1.在下列情况下一般只能用whether，不用if。

①在“whether or not”结构中，例如：

Harvard refused to tell me whether or not he has finished writing his composition．

②在介词后面时，例如：

It’s a question of whether you are fit for the position．

③引导主语从句时，例如：

Whether they will win or lose is all the same to me．

④后接动词不定式时，例如：

Can you tell me whether to go or to stay?

⑤引导同位语从句说明名词时，例如：The question whether we should have the meeting must be decided right away．

⑥引导表语从句时，例如：

My problem right now is whether I should have someone else take the place of me．

4)whoever(whomever)，whatever，whichever相当于anyone who／whom，anything that，any．．．that 。例如：

Hunter gave whoever asked for it，a copy of his latest novel．She gave a present to

whoever was present at the evening party．

You can have either of the watches．Take whichever you like．

前两句中可用anyone who代替whoever,第三句中可用any one that代替whichever