may do和may have done的区别

may do和may have done的区别 might be和 may have been的区别?还有是might do和 may have done may have done和may have done 的区别RTmay have done和might have done may have been 和may have done的区别,特别是may have been doing和may have done的区别,他们都表对过去推测啊? can't have been和can' have done有什么区别或者must have been和must hane done;may have been和may have done may have done 和 might have done 都怎么用啊,通俗易懂啊, may have done sth 和might be 都是表示对过去的猜测 有什么区别?What has happened to Jim?I do not know He ___lostA. might get B.may have got yes they may have done 为什么不能用can 有must/could/can/may/maight have been done吗 高中英语中can与may,could、might、may、would/+have done 的区别 May/might + 动词原形,May/might be doing,May/might have done这三种结构分别在什么时候使用? can have done 和may have done 也可用在过去时态里面吗?这个时候（用在过去时里）那跟could have done 和maight have done 有什么区别啊? must have done 与 may have done 的反义疑问句详解 May not have done 是表示可能不还是不可能 那Could not have done呢 may have been和may be怎么翻译 be likely to do sth ,have an ability to do sth和may有什么区别 He might have given you more help,even though he was busy.他或许会多给你一些帮助,即使他很忙.1.这里的might have done做什么用法2.mightn't have done意思3.may have done 和may have done意思用法一样吗 could have done能不能表示对过去事实的猜测用在肯定句中?与must have done may have done might have done