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if的用法
更新时间： 2021-01-25 05:10:36  

1、if作为连词，引导条件状语从句，表示“如果”等。在复合句中如果主句用将来时，则if引导的状语从句用一般现在时（最基本的）。

2、if还可以引导让步状语从句。在意义上相当于even、if,even、though或although。

3、if作为连词还可以引导宾语从句。引导宾语从句时和whether意思相同。

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