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1500字范文 > I don’t know if she .If she please let me know.A comes comes B will come will come C w

I don’t know if she .If she please let me know.A comes comes B will come will come C w

时间:2018-11-30 17:19:02

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I don’t know if she .If she   please let me know.A comes  comes B will come  will come C w

问题补充:

I don’t know if she .If she , please let me know.

A comes, comes B will come, will come C will come ,comes

答案:

解析:if既可以引导宾语从句又可以引导状语从句。if充当宾语从句的连接词时,相当于whether,词义为“是否”,遵循宾语从句的时态规则,可根据语境选择任何时态;充当从属连词,引导条件状语从句时,词义为“如果”,若主句中的谓语动词用一般将来时,则从句中的谓语动词通常用一般现在时表示将来。

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