题目内容

7.too many,all over the worldToo many trees have been cut down all over the world.

分析 全世界有太多的树被砍.

解答 答案:Too many trees have been cut down all over the world.图片上是树被砍cut down,too many 太多,all over the world全世界,故造句全世界有太多的树被砍.动作发生在过去,对现在造成一定的影响,故用现在完成时have/has+过去分词,主语too many trees复数,故have,主语是cut down的承受者,故用现在完成时的被动语态have+been+过去分词,cut的过去分词是cut,后加地点状语all over the world.故答案是Too many trees have been cut down all over the world.

点评 主动语态表示主语为动作的执行者;被动语态表示主语为动作的承受者.现在完成时的被动语态强调过去的动作对现在造成的影响或结果,但主语为动作的承受者,表示"…已经被…".如:
The new school has been set up.新学校已经建成了.

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