题目内容
1. I don't know whether my sister (come) . If she (come) ,I will let you know.
1. will come;comes whether引导宾语从句,表示将来用一般将来时;if引导状语从句,主句用一般将来时,从句则要用一般现在时。
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1. I don't know whether my sister (come) . If she (come) ,I will let you know.
1. will come;comes whether引导宾语从句,表示将来用一般将来时;if引导状语从句,主句用一般将来时,从句则要用一般现在时。