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whether的用法是什么

消防工程师阿杜 | 教育先行,筑梦人生!         
问题更新日期:2024-05-16 22:38:34

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whether的用法是什么求高手给解答
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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. 当引导的从句中出现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.