题目内容
9.If David ____ enough free time,he will write about his volleyball team in his next book.( )| A. | has | B. | will have | C. | had | D. | has had |
分析 如果戴维有足够的空闲时间,他会在他的下一本书里写到他的排球队.
解答 答案:A.if引导的条件状语从句,遵主将从现的规则,从句主语David三单,故has,故答案是A.
点评 1. if从句用一般现在时,主句用一般将来时
If he runs he'll get there in time.如果他用跑的,他就会及时赶到那儿. The cat will scratch you if you pull her tail.如果你拉猫的尾巴,它就会抓你.
2..if从句用一般现在时,主句用may/might/can
If the fog gets thicker the plane may/might be diverted.如果雾在大一些,飞机可能就会改在别的机场降落.
If it stops snowing we can go out.如果雪停了,我们就可以出去.
3. if从句用一般现在时,主句用must/should
If you want to lose weight you must/should eat less bread.如果你想减肥,你必须少吃面包.
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