关于被动语态的问题1.The ancient Egyptians are supposed to have sent r

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关于被动语态的问题
1.The ancient Egyptians are supposed to have sent rockets to the moon a long time ago.
为什么要用have?
2.Everything taken into consideration,the plan Xiao Wang put forward seems to be more workable.
前半句中的taken是做什么成分?为什么不用be动词?
为什么第一题的be动词不是用过去时？

1.be supposed to do sth表示应该去做什么,但是如果表示“过去应该做某事”则要在不定式后边用have done sth. 这里是陈述一个过去的情况,所以用be supposed to have done sth.
2. "everything taken into consideration"并不是主句,这里everything与take的关系是被动进行,("sb. takes everything into consideration")所以用过去分词表示被动关系.

关于被动语态的问题1.The ancient Egyptians are supposed to have sent r UFOs are supposed to be sent to___with the human beings. 【改为被动语态】1.We sent the young man to work at this school. 这是关于被动语态的,就是不明白这句改成被动语态have to为什么变成has to啊关于被动语态和分词的问题关于被动语态和分词的问题! 关于被动语态变成疑问句的问题关于九年级英语被动语态的问题. 关于英语被动语态的问题关于write的被动语态问题几个关于被动语态的初中问题 be supposed to 作为半助动词和被动语态用法的差别