should have done表示主句对过去的虚拟
非真实 与现实相反
should/ought to/might/ mustn't/cant't/need't/don't/could/ ha
2个回答
相关问题
-
Ought,ought't to,should,shouldn't Mustn't,
-
用have to,has to,need't,don't need to,填空.
-
oughtn't to和don't ought to
-
can,can't,must,mustn't,needn't,be allowed to,have to,don't h
-
英语问题don't need to need't to not need to
-
don't need do还是 don't need to do
-
don't need to 和needn't
-
you(don't need to come,don't come,needn't to come)to school
-
you ____ smoke填don't have to 还是mustn't
-
（1）we mustn't buy things we （don't need）和No,I （needn't ）这两个可