完成时的被动语态怎么否定1.not该加在什么位置,have后面还是been后面2.还有would,can,should be,not加在什么位置,
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1 haven't been done
2 wouldn't,can't,shouldn't +be done
======以下答案可供参考======
供参考答案1:
1. have not been
2. would not, cannot (请注意，这是一个单词）, should not be
供参考答案2:
一定是 have not been, would not be, should not be
cannot be
供参考答案3:
放have后边
wouldn't
can not=can't
shouldn't