the trees _______________in the storm have been moved off the road.A.being blown downB.blown downC.blowing downD.to blow down选什么,为什么?

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the trees _______________in the storm have been moved off the road.A.being blown downB.blown downC.blowing downD.to blow down选什么,为什么?
the trees _______________in the storm have been moved off the road.
A.being blown down
B.blown down
C.blowing down
D.to blow down
选什么,为什么?

the trees _______________in the storm have been moved off the road.A.being blown downB.blown downC.blowing downD.to blow down选什么,为什么?
答案 B.blown down
The trees (blown down) in the storm have been moved off the road.
暴风雨中被刮倒的树已经从路上清除.
blown down是过去分词短语,修饰前面的trees
A.正在被刮倒,不符
C.blowing down正在吹(刮)倒,这个主动用法是风将...吹(刮)倒
D.to blow down将刮倒

The trees;特指这些树或这片森林 These tress;仅仅指这些树或这片森林 其实一般情况下都可以转换只是the 指特指树,these指这些树 the trees 指

答案 B
可以从两方面去判断:
一、树是被刮倒的,所以排除C、D。
二、移开的树已经被刮倒的,不是正在被刮倒的,所以A不可以。
B项相当于省略了which has been, 还原成完整的句子是The trees ( which has been blown down) in the storm have been moved off the road. "whic...

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答案 B
可以从两方面去判断:
一、树是被刮倒的,所以排除C、D。
二、移开的树已经被刮倒的,不是正在被刮倒的,所以A不可以。
B项相当于省略了which has been, 还原成完整的句子是The trees ( which has been blown down) in the storm have been moved off the road. "which has been"是语法规则,即 定语从句的先行词如(which that )+be\has been\had been+现在分词\过去分词 的时候,(which that )+be\has been\had been通常可以省略,只留下分词形式。
例:The boy who is playing the basketball is from USA. 可以写成The boy playing the basketball is from USA。

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