was supped to do 和 is supposed to have done的区别,他两个小时前就该来了,应该

was supped to do 和 is supposed to have done的区别,他两个小时前就该来了,应该 was/were supposed to do 和is/are supposed to have done是一样的意思吗 be supposed to be done 和be supposed to have been done的区别 be supposed to do sth 与 be supposed to have done sth的区别 Is/Are supposed to do 与Was/Were supposed to do 的区别是什么?具体用法? be supposed to do与was/were supposed to have done be supposed to 和should have done seem to do和seem to have done的区别 was to do&was to have done be supposed to do sth与should have done sth 有什么区别? you were supposed to do,那么you were supposed to have done可以吗 have sb do/doing/done/to do的意思 have sb do 和have sb to do有区别吗