题目内容
14.-Do you know if he _________ to play football with us?-I think he will come if he _________ free tomorrow.( )
| A. | comes; is | B. | comes; will be | ||
| C. | will come; is | D. | will come; will be |
分析 -你知道他是否来和我们踢足球吗?
-我认为如果他明天有空,他会来.
解答 答案:C 根据Do you know if可知,if在动词后面,它引导的是宾语从句,表示"是否".当主句是一般现在时态或含情态动词的句子,宾语从句应该根据需要选用任何时态.此句由tomorrow可知,动作还没有发生,所以用一般将来时态,排除AB;又根据I think he will come if可知,if引导的是条件状语从句,当主句是一般将来时态,从句应该用一般现在时态表将来,我们称这一现象为"主将从现",排除D.故选C.
点评 本题考查宾语从句和状语从句,if引导的是条件状语从句,当主句是一般将来时态,从句应该用一般现在时态;if引导的是宾语从句,当主句是一般现在时态或含情态动词的句子,宾语从句应该根据需要选用任何时态.
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