1. Its time sb. did sth. “时间已迟了”“早该了“2. sb. would(had) rather sb. did sth. “宁愿某人做某事” 3. ThisIt is the 1st2nd time that .(havehas done) 。was (had done)4. 句型 hardly when ; scarcely . when . ;no sooner than ; 中had done did5. 状语从句 by the time , 。 did had donedo(does) will have done7. 状语从句 if , 。do(does) will do8、if、 wish、if only 等虚拟语气中。9、情态动词猜测和虚拟中。10、某些时间词 so far, since, recently, in the last(past)., ago, before, the other day, already, just now, never, ever, then,11、had hopedplanned=hoped to have doneplanned to have done
