以If引导的宾语从句特点或结构
以If引导的宾语从句特点或结构
英语人气:575 ℃时间:2020-01-30 01:49:45
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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:\x0dI wonder if / whether I can get some advice from you.\x0dAsk him whether / if he can come.\x0d但在有些情况下,whether和if的用法有一定区别.\x0d1.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:\x0d正:Let me know whether you can come or not.\x0d误:Let me know if you can come or not.\x0d2.当宾语从句提到句首时,只能用whether引导,而不能用if.如:\x0d正:Whether it is true or not,I can’t tell.\x0d误:If it is true or not,I can’t tell.\x0d3.whether可以引导带to的不定式,if则不能.如:\x0d正:I don’t know whether to accept or refuse.\x0d误:I don’t know if to accept or refuse.\x0d4.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:\x0d正:I worry about whether I hurt her feelings.\x0d误:I worry about if I hurt her feelings.\x0d5.whether可以引导从句,作主语、表语或同位语,而if不能.如:\x0d正:It was uncertain whether he would come.\x0d误:It was uncertain if he would come.\x0d正:His first question was whether Tom had arrived yet.\x0d误:His first question was if Tom had arrived yet.
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