if与may不共存?常与must连用?老师这样讲的对么?不对的话该如何解答? eg:-could I have a wo
must have+P.P 与may,might could have +p.p的区别
现在完成时一般不与准确时间连用,为什么must have done 可以和过去时间连用?
could ,may ,can ,must ,need,的使用,与区别等
must have done 与 may have done 的反义疑问句
常与 阳春白雪 连用的词是什么
should/must/would/could/might/may have done的问题!
may i could lost in Thailand,这个句子对么?还是应该这样 may i lost in Tha
shall should may might can could must虚拟语气的用法与区别比较
高中英语中can与may,could、might、may、would/+have done 的区别
常与一般现在时连用的时间状语是什么?
常与介词for连用的动词有哪些
常与介词to连用的动词有哪些