while walking in the street ,you have to be very careful to
avoid__down by passing cars or trucks.a.to be knocked b.being knocked
答案为什么不是a?不应该是将来吗?虽然avoid+doing,可是前面还有while while 的主句不是要+done吗?
在什么时候while +done：doing+when?
都表示什么?
就像这道题while watching tv,___
a.the doorbell rang b.we heard the doorbell ring c.we heard
the doorbell rings d.we heard the doorbell rang
如果是B.C.D怎么分析?
为什么?
人气：301 ℃ 时间：2020-03-19 01:31:40
解答
说的有些混乱哦.
首先回答你的第一个题,为什么不选a呢?没错,while 的主句是要+done,但是答案要是knocked,才符合.比如,make sth done这个结构,只能说 I made the car damished.而不说I made the car to be damished.或者I made the car be damished.
第二,选B.
首先排除a,因为a使整个句子没有主语.
剩下b,c d.记住hear sb/sth +doing...或是do原形.一般情况,动作发出者不是人而是物体时,用动词原形.
这里的选项中没有ranging,而且动作的发出者不是人,所以用原形ring.
不知道我的浅见对你有没有帮助.
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