wheather和if有什么区别

如题.

2017-01-11 提问者:lost guy

教师解答

JESSE lEE

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： Let me know whether you can come or not.

2017-01-11

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JESSE lEE

当宾语从句提到句首时，只能用whether引导，而不能用if。如：Whether it is true or not, I can’t tell.

2017-01-11

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JESSE lEE

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.

2017-01-11

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JESSE lEE

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： I worry about whether I hurt her feelings.

2017-01-11

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JESSE lEE

whether可以引导从句，作主语、表语或同位语，而if不能。如： It was uncertain whether he would come.

2017-01-11

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JESSE lEE

His first question was whether Tom had arrived yet. We must consider the question whether we will take these measures.

2017-01-11

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