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once environmental damage ________,it will take many years for the system to recover
A has done B is to do C does D is done 大家帮个忙啊说明一下B 错在哪?还有D表示什么
回答者:匿名 12-2 00:52 xieixe
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推荐答案 2007-12-02
题意是
一旦环境被毁坏,(环境)系统将需要很多年来恢复
这里应该要选一个被动态,damage(破坏)被做,所以应该选D
B根本跟题意就不相符
这里是说破坏一旦被造成,那么damage就只能被做,不能选主动态的
如果选is being done表示的是正在被破坏,跟后面的时态不太配,而且翻译过来也会变得很奇怪了
其实如果有has been done我会选这个,因为它会更强调环境已经被破坏,这样会需要长时间来恢复
D选项没问题,我确信是这个。
不客气~希望对你有帮助~
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第1个回答 2007-12-02
我觉得 这个题目选择是 C
这句话的意思大概是:一旦环境遭到了破坏,就会用好多年来恢复
所以主句的 it 是前面environmental damage
没有一点的被动含义,前面是环境破坏,后面的recover 的宾语也是environmental damage
所以只能选择主动语态,B D不对
be to do 是 即将发生的事情,按照计划要做的事情~
D的意思是被动的遭到破坏,但是根据后面的主语一致的原则,不能用被动~D的主语都应该是人了
这个是我的理解~
第2个回答 2007-12-02
D's the correct answer.
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