题目内容
3.---Aunt,can you ask Mike to help me with my English?---He can help you when he ______ free.( )
| A. | willbe | B. | has | C. | is | D. | was |
分析 ---婶婶,你能让麦克帮我学习英语吗?
---他空闲的时候可以帮助你.
解答 答案:C.
when引导的时间状语从句,遵循主将从现的规则,从句主语he三单,故is,故答案是C.
点评 在时间、条件状语从句中,主句用一般将来时,从句要用一般现在时代替一般将来时.
例如:
I will let you know if he comes.
We will inform him when he gets here.
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