英语反义疑问句 问题 老师进啊

就一个题 It must have rained.改为反义疑问句?郁闷啊 老师们【最好附加点 讲解】
谢谢老师 由于只能采纳一个,所以.....就采纳最快的吧.....

第1个回答  2009-03-21
It must have rained, didn't it?
这里的must have done 结构表示对过去事情的肯定推测,所以反义疑问部分用一般过去时的否定形式didn't。
第2个回答  2009-03-21
It must have rained, didn't it?
这里主句must have done表示对于过去的推测
所以用一般过去式提问本回答被提问者采纳
第3个回答  2009-03-21
haven't it
must表示肯定的猜测 如用mustn't表示不准
例 He must be at home,isn't he?
You must have finished your homework,haven't you?
但如果有表过去的时间状语,如yesterday last week 用过去式
第4个回答  2009-03-21
It must have rained, didn't it?
相似回答