Unit 2 Healthy eating Modal VerbsPart 1 自主学习go over the Modal Verbs exercises。用情态动词 can could might may must mustn’t will would should ought to 填空。1）_______________ I borrow your bike for a moment?2) I thought the story __________ not be true.3) He said that I ____________ use his telephone.4) He _______________ be from Canada.5)You ___________ smoke in public places.6)I don ’t like this radio. I ___________ buy a new one.7)The radio is broken. I ___________ buy a new one.8)Where ___________ I wait for you.9)You ___________ keep your promise.10)I ____________ tell you about it.11)____________ you like to join the football club?12)There’s something I ___________ tell you before yo u leave.Part 2 合作探究Task 1 情态动词+have doneMust have done 想必/ 准是/一定做了，否定式为:can’t/ couldn’t+have done.eg. It must have raided last light for the road is quite mudy.can /could have done 1 本来能够做 2 过去可能会做eg. Can he have gone to his aunt'scannot/could not have done 1 过去不可能 2 过去没能够eg.He cannot have forgotten it. may /might have done 也许/或许已经做----- ，一般只用于肯定句或否定句（在否定句中表示“可能不”），不用与疑问句。用 might 表示语气更加不肯定。It’s too late. I think he may have gone to school.He may not have finished the work.Should /ought to have done 本该做，而实际上没做eg. You ought to have done this exercise carefully.Should not /ought not to have done 本不该做而做了eg.You should’t have told her the truth.needn’t have done 本不必做而做了eg.You needn’t have taken a taxi here, for it was very near to my house.How did you do on the driving test? not so well. I ________________ (could have done/must have done) much better but I was too nerous.You have broken your promise; you____...
