灵鹊做题网When the doctors arrived,the old man ( ) A.is dying B.was de
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When the doctors arrived,the old man ( ) A.is dying B.was dead C.had been dead D.has been dead
为什么选c 而不是d
为什么选c 而不是d
楼主.
首先：某事如果在现在的状态下就已经发生了——现在完成时（has,have）
某事如果在过去的状态下就已经发生了——过去完成时 （had）
然后：doctor进来是用的arrived,说明某事（死亡）是在过去的状态下（doctor arrived）的状态下就已经发生了,所以用过去完成时.
简单的方法：过去完成时,就是过去已经干完的事情,那老头已经在医生进来（arrived,注意是过去式）之前就死完了,所以用过去完成时.
如果,doctor是arrives的话,本题就选（D）了.
首先：某事如果在现在的状态下就已经发生了——现在完成时（has,have）
某事如果在过去的状态下就已经发生了——过去完成时 （had）
然后：doctor进来是用的arrived,说明某事（死亡）是在过去的状态下（doctor arrived）的状态下就已经发生了,所以用过去完成时.
简单的方法：过去完成时,就是过去已经干完的事情,那老头已经在医生进来（arrived,注意是过去式）之前就死完了,所以用过去完成时.
如果,doctor是arrives的话,本题就选（D）了.
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