题目内容
5.If you him tomorrow,please ask him if he us.( )| A. | see; join | B. | will see; join | ||
| C. | see; will join | D. | will see; will join |
分析 如果明天你看见他,请问他是否加入我们.
解答 答案:C.if引导的条件状语从句,主句是祈使句,从句用一般现在时,从句主语you,故see,从句中的if引导的是宾语从句,主句一般现在时,从句时态不受限制.表达的是将来的事情用一般将来时will+动词原形,故答案是C.
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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