be supposed to 和should have done

be supposed to 和should have done be supposed to be done 和be supposed to have been done的区别 be supposed to do sth与should have done sth 有什么区别? be supposed to 和should的区别 be supposed to do sth 与 be supposed to have done sth的区别 be supposed to have done +时间怎么用 区分一下sth be supposed to do和sth be supposed to be done be supposed to do与was/were supposed to have done have been done 和 to be done should 和 be supposed to 的区别与用法? be supposed to 和should用法上有什么区别? should have done 和should be doing 有区别吗