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T:From the chart we can see modal verbs can be classfied into eight groups by their usages.Are you clear about the classification? Ss:Yes. T:OK.Now look at the first part in Grammar.Finish the exercises according to the class fication of modal verbs.If you need,you can discuss with your partner.In addition you’d better make it clear why you choose A、B、C,or D.Are you clear about the requirements? Ss:Yes. (Teacher gives students enough time to finish the exercises.Then deals with them with the whole class.) T:Are you ready? Ss:Yes. T:OK.Who’d like to tell me the answer to the first one? S4:I think “A” is right. T:Can you tell us the reason why you choose “A”? S4:Because the speaker wants to express his/her request.Among A、B、C and D,only A can be used to express request. T:Very good.What about the second one? S5:“May” is right,I think,because the sentence is used to ask for permission. T:Congratulations!Who can answer the third one? S6:The phrase “wants to” express a state of being necessity.So I think “C” is right. T:Well done.It’s turn to do the fourth one.Who can try? S7:I’m not sure,but I want to have a try.Is “C” right? T:Why did you choose “C”? S8:I think the first sentence expresses some necessity and the second one expresses guess. S9:I don’t think so.Because “must” can’t be used in negative sentences to express guess. S8:Oh,I’m sorry.I forgot it.I see,the correct answer is “D”. T:Excellent! … (Teacher encourages students to show their opinions about each one,and then teacher gives the correct answers and some necessary explanations.) (责任编辑：admin) |