【精品】高中英语（人教大纲）第二册下：Unit14 Freedom fighters(第五课时).doc

The Fifth PeriodThe Passive VoiceTeaching Aims:1.Summarize and review the different forms of the Passive Voice in the Present Indefinite,the Past Indefinite,the Future Indefinite and the Present Perfect.2.Help the students master how to turn the Active Voice into the Passive Voice.3.Make sure the students know how to change sentences with modal verbs into the Passive Voice.Teaching Important Point:Help the students to use the Passive Voice in the Future Indefinite and the Present Perfect correctly.Teaching Difficult Point:How to make the students know how to change the verbal phrases from the Active Voice into the Passive Voice correctly.Teaching Methods:Review,explanation,inductive methodsTeaching Aids:1.the multimedia2.the blackboardTeaching Procedures:CStep Ⅰ GreetingsGreet the whole class as usual.CStep Ⅱ RevisionT:We’ve learnt the Passive Voice before.Now,look at the screen,please.(Show the following sentences on the multimedia.)Turn the following into the Passive Voice:1.He washes his clothes every week.2.I repaired my bike yesterday.3.We shall discuss the question at our next meeting.4.They have done everything to make the work easier.5.The driver is repairing the car.6.You must keep the book clean.T:Please change these sentences into the Passive Voice.After you finish,you may check your answers with the deskmate.(Students prepare for a moment and then check their answers in pairs.Finally,the teacher asks some students to write their sentences on the blackboard.)Suggested answers:1.His clothes are washed every week.2.My bike was repaired yesterday.3.The question will be discussed at our next meeting.4.Everything has been done to make the work easier.5.The car is being repaired(by the driver).6.The book must be kept clean.T:Good.Now,read each sentence carefully and underline the predicate in it.(Ask some students to underline the predicate in each sentence.)Suggested answers:1.are washed2.was repaired3.will be discussed4.has been done5.is being repaired6.must be keptT:Well done!Look at the underlined parts.What can you find?Ss:They’re all in different forms.T:You’re quite careful.They’re in different forms.In the first sentence we use the Passive Voice in the Present Indefinite.In the second sentence we use the Passive Voice in the Past Indefinite.The third,the Passive Voice in the Future Indefinite.The fourth is the Passive Voice in the Present Perfect.The fifth is the Passive Voice in the Present Continuous.The last one is the Passive Voice with a modal verb.Are you clear?Ss:Yes.T:Good.You must pay more attention to the predicate forms in Passive Voice in different tenses.You must be careful.CStep Ⅲ PracticeT:Now,let’s do some more exercises.Look at the screen,please.(Show the following on the screen.)Turn the following sentences into the Passive Voice:1.We speak Chinese here.2.I finished my homework in two hours.3.They were making a model plane.4.They have finished the work.5.We can change water into ice.6.You ought to ask for his advice.7.When will you paint the wall?8.Have you found your book?T:Finish the exercise quickly by yourself and then check your answers in pairs.A moment later,I’ll ask some of you to read out your answers one by one.Suggested answers:1.Chinese is spoken here.2.My homework was finished in two hours.3.A model plane was being made.4.The work has been finished.5.Water can be changed into ice.6.His advice ought to be asked for.7.When will the wall be painted?8.Has your book been found?CStep Ⅳ Explanation and PracticeT:(Bb:We must take good care of the children.)Please look at the blackboard.Change the sentence into the Passive Voice.Who’d like to have a try?S1:I’d like to.The children must be taken good care.T:Do you agree with her/him?S2:I think the sentence should be “The children must be taken good care of”.(Teacher writes it on the blackboard.)T:Very good.In this sentence the predicate is a phrase,when we change it into the Passive Voice,we must look on the phrase as a whole.We shouldn’t miss the adverb or preposition in the phrase.Do you understand?Ss:Yes.T:OK.Now,let’s do some exercises.Look at the screen,please.(Show the following on the multimedia.)Turn the following into the Passive Voice:1.We have never heard of such things before.2.They listened to her with great interest.3.A peasant woman brought the child up.4.They often made fun of him in school.5.I’ll look after your baby well.6.We must take down the notice quickly.(Give the students enough time to do these exercises,and then check the answers with the whole class.)Suggested answers:1.Such things have never been heard of before.2.She was listened to with great interest.3.The child was brought up by a peasant woman.4.He was often made fun of in school.5.Your baby will be looked after well.6.The notice must be taken down quickl。