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3.—I want to know why she is late. —She ______ the early bus. A.could miss B.can have missed C.may have missed D.might miss 4.—I stayed at a hotel in New York. —Oh,did you?You ______ with Barbara. A.could have stayed B.could stay C.would stay D.must have stayed 5.The light is still on.He ______ to turn it off when he ______ the room. A.may forget;leave B.must have forgotten;left C.may forget;have left D.could have forget;left (Teacher shows the exercises on the screen and gives students enough time to finish them,and then checks their answers and gives them some necessary explanation.) Suggested answers: 1.C 2.D 3.C 4.A 5.B T:Now,it’s turn to review modal verbs expressing “advice”.Who’d like to tell me which modal verbs we can use to express “advice”? S4:I think we usually use “should/ought to/had better” to give “advice”. T:Yes.In most cases,both “should” and “ought to” can be used with more or less the same meaning.However,there is a very slight difference.When we use “should”,we give our own subjective opinion.“Ought to” had a rather more objective force,and is used when we are talking about laws,duties and regulations.Are you clear about that? (责任编辑：admin) |