whether的用法总结 whether的用法是什么?

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whether的用法是什么?

优质回答:

1.whether和if都可以表示“是否”,引导宾语从句。

You may wonder whether/if it is true. 你可能想知道它是否是真的。

2.当引导的从句X现or not时,通常用whether,而不用if。

I’m wondering whether you will come to my party or not tomorrow. 我想知道你明天是否来参加我的聚会。

3.to+动词的结构(即动词不定式)前只能用whether。

Have you decided whether to accept the offer yet?你决定好是否接受那个报价了吗?

4.介词prep.后只能用whether。

We’re discussing the problem of whether to accept the offer.我们正在讨论关于是否接受报价的问题。

5.当宾语从句提到句首表示强调时,只能用whether引导,不能用if。

Whether they can finish the work on time is still a problem. 他们是否能按时完成他们的工作还是个问题。

6.只能用whether引导主语、表语或同位语从句,不可用if。

It was a question whether the girl should get married. 这个女孩是否应该结婚曾是个问题。

The question is whether they will support the plan. 问题是他们是否会支持这个计划。

The question,whether we need it,has not yet been considered. 我们是否需要它这个问题还没有被考虑到。

拓展:

whether和if的用法分析 whether和if都可以引导宾语从句,表示“是否”,在口语或间接引语中两者可以互换使用。如: I wonder if / whether I can get some advice from you. Ask him whether / if he can come. 但在有些情况下,whether和if的用法有一定区别。 1. whether引导的从句常可以与连词or或or not直接连用,而if一般不能。如: 正: Let me know whether you can come or not. 误: Let me know if you can come or not. 2. 当宾语从句提到句首时,只能用whether引导,而不能用if。如: 正: Whether it is true or not, I can’t tell. 误: If it is true or not, I can’t tell. 3. whether可以引导带to的不定式,if则不能。如: 正: I don’t know whether to accept or refuse. 误: I don’t know if to accept or refuse. 4. whether及其引导的成分可放于介词之后,作介词的宾语,但if不能。如: 正: I worry about whether I hurt her feelings. 误: I worry about if I hurt her feelings. 5. whether可以引导从句,作主语、表语或同位语,而if不能。如: 正: It was uncertain whether he would come. 误: It was uncertain if he would come. 正: His first question was whether Tom had arrived yet. 误: His first question was if Tom had arrived yet. 正: We must consider the question whether we will take these measures. 误: We must consider the question if we will take these measures.

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