if和whether后引导宾语从句时为是否,但为什么还可在后面加or not,也翻译成是否,有区别吗

如题所述

1.If 和whether一般来说没有区别,并可以互换,意思相同,如:
I will call tomorrow if/whether he is out.
You would enjoy it if/whether you went to the exhibition.
If/ Whether I were in your position, I would act differently. (本句为‘虚拟语气’)
(当然,主句、从句的位置可以互换)
2.但是,whether可以加or not,而if不可以。如:
Tom asked whether Jack will arrive tomorrow or not.
Whether or not to go to the party, I could not decide.
(当然,主句、从句的位置可以互换)
3.whether可以引导带to的不定式,if则不能。如:
I don’t know whether 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。
I worry about whether 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。
It was uncertain whether he would come.
His first question was whether Tom had arrived yet.

总结:If和whether有它的相同特点,也有不同之处。细心就可以发现。

以上是我的观点,
希望您能予以采纳。
谢谢!
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第1个回答  2009-10-17
eg:Whether you like the hat or not?
按照句面来翻译的话就是你喜欢这顶帽子还是不喜欢。只有whether后面才能跟or not,if不能。whether后面跟or not时是表选择本回答被提问者采纳
第2个回答  2009-10-09
whether 和or not 连用。
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