请问宾语从句什么情况下只能用WHETHER不能用IF
以下几种情况下只用whether 不用if:
1.所引导的从句作介词宾语时。Eg: I worry about whether I hurt her feelings。
2.从句置于句首表示强调时。
Eg:Whether this is true(or not),I can’t tell。
3.和动词不定式连用时。 Eg: ?I don’t know whether to see my doctor today。
4.直接与or not连用时。Eg: Can you tell me whether or not the train has left? ?
5.discuss后面只能跟whether引导的宾语从句。
Eg: We discussed whether we should close the shop。
答:以下四种情况只能用whether. 1)句子后面出现了or not,只能用whether. eg。I don't know whether he still w...详情>>
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