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【题目】You can go out and play if you your homework.

A. finished B. finish C. will finish D. don’t finish

【答案】B

【解析】句意:如果你完成作业,你可以出去玩。A. finished一般过去式;B. finish一般现在时;C. will finish一般将来时;D. don’t finish一般现在时。 If引导的条件主语从句,有三种形式:(1)主情从现,主句是含有情态动词的陈述句,从句的时态用一般现在时。(2)主祈从现,主句是祈使句,从句的时态用一般现在时。(3)主将从现,主句时态是一般将来时,从句的时态用一般现在时。本句是if引导的条件状语从句,主句是含有情态动词的陈述句,从句的时态用一般现在时。结合句意可知选B。

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