2019-2020年高中英语（人教大纲）第二册下：Unit16 The United States of America(第五课时).doc

2019-2020年高中英语（人教大纲）第二册下：Unit16 The United States of America(第五课时)Teaching Aim:Revise the Non-finite Verbs and Non-finite passive form.Get the students to do some exercises to master its usage,and correct the mon mistakes that students make when doing exercises.Teaching Important Point:Master the usage of the Non-finite verb form,especially how to choose the correct form when we use it.Teaching Difficult Point:How to choose the correct form when the v.-ing form is used as adverbial and how to change the v.-ing form into a clause.Teaching Methods:Review inductive,discussion methods.Teaching Aids:1.the blackboard2.the multimediaTeaching Procedures:CStep Greetings and Lead-in (Greet the students as usual.)T:In this class,well discuss how to use the Non-finite Verb.Lets divide it into three parts,i.e.the Infinitive,the v.-ing and the Past Participle.Then well do some exercises to master its usage and at last well do a test.OK.Lets study the first part: The Infinitive (Write them on the blackboard.)CStep Discussion (Teacher lets students look at some sentences on the screen and pay attention to the under lined phrases.)T:Please look at these sentences on the screen.(Show the following on the screen.)I want to go shopping.(object)2. To answer the question is not easy.(subject)3.Would you like anything to drink?(attribute)4.He went to help the farmers. (adverbial)5.She wanted you to ring her.(object plement)As you know,the infinitives in these sentences are used as subject,object,object plement,attribute and adverbial for purpose.Maybe some of them are hard for you to master,but in fact they are very important.CStep Summary the Forms,the Tenses and the Usages of the Infinitive and the Infinitive PhraseT:Today lets sum up and review the forms and usages of the Infinitives.Please look at the diagram on the screen.(Show the following on the screen.)Forms of the InfinitiveActivePassiveIndefiniteto doto be donePerfectto have doneto have been doneContinuousto be doingPerfect continuousto have been doingNegative formnot/never to doT:The tenses of the infinitive express time relatively to that of the predicate verb.If the action expressed by the infinitive is of the same time as or of later time than that expressed by the predicate verb,the infinitive or continuous forms should be used.If the action expressed by the infinitive is of earlier time than that expressd by the predicated verb,the perfect infinitive should be used.Please look at the examples on the screen.(Show the following on the screen.)I hope to visit Beijing again.=I hope that Ill visit Beijing again.He seemed to have known this.=It seemed that he had known this.He seems to be studying hard.=It seems that he is studying hard.T:Attention,please.(1)The Infinitive without “to” is used after the verbs:make,have,let,feel,listen to,hear,watch,look at,see,notice,observe,etc.(Write them on the blackboard.)e.g.We saw him cross the street.I listened to her sing a song.But in the Passive Voice,the infinitive with “to” must be used.e.g.He was seen to cross the street.She was heard to open the door.(2)The infinitive can be with “to”or without “to” after the verb “help”.e.g.He helped me(to)carry the books upstairs.CStep Consolidation and PracticeT:Now you have known the usages of the Infinitive.Lets do some exercise.Please look at the screen.(Show the following on the screen.)Choose the best answer to fill in the blanks:1.They asked me_it a secret.A.to keep B.keeping C.to be kept D.kept2.The doctor did everything he could_the patient.A.save B.to save C.saving D.saved3.They dont need_so early this time.A.leave B.left C.to leave D.leaving4.Could you lend me a pen_?A.to write B.to write by C.to write in D.to write with5.It was foolish_you to give up what you rightly owned.A.for B.of C.about D.from6.Last summer I took a course on_.A.how to make dresses B.how dresses he madeC.how to be made dresses D.how dresses to be made7.Tom kept quiet about the accident_lose his job.A.so not as to B.so as not to C.so as to not D.not so as to8.The light in the office is still on.Oh,I forgot_.A.turning it off B.turn it off C.to turn it off D.having turned it off9.We agreed_here but so far she hasnt turned up yet.A.having met B.meeting C.to meet D.to have met10.John was made_the truck for a week as a punishment.A.to wash B.washing C.wash D.to be washingSuggested answers:1.A 2.B 3.C 4.D 5.B 6.A 7.B 8.C 9.C 10.AT:Now lets deal with Part 2:the v.-ing(Write it on the blackboard)Please look at the screen.Pay attention to the function of the underlined parts.(Show them on the screen.)1.Beating a child will do more harm than good.2.I hate writing letters.3.Do you mind my making a suggestion?4.Im looking forward to seeing you at Christmas.5.Your hair needs cutting.(=Your hair needs to be cut.)T:Who can tell us the function of the v.-ing in each sentence?Please try your best.S1:Ill try.No.1,“beating” is used as subject.No.2,3,4,5,all the v.-ing are used as objects.T:Can we transform the second sentence into “I hate to write letters”?Ss:No,we cant.T:Youre right.In English,the v.-ing is only used after some verbs,they are:admit,avoid consider,delay,dislike,enjoy,escape,excuse feellike,finish,give up,cant help,imagine,mind,miss,practise,suggest,understand.(Write them on the Bb.)e.g.Have you considered getting a job in the city?I enjoy travelling abroad.Attention,please.When the v.-ing is used after “need,require and want”,it can express the passive meaning.e.g.The garden needs watering.(=The garden needs to be watered.)T:Now,look at some other sentences on the screen.(Show the following on the screen.)1.The train standing at Platform Eight is for Wuhan.2.People shopping carry many plastic bags.3.Hearing the noise,they immediately rushed out of the room.4.Having graduated from the college,he went to a factory.Have a discussion in groups of four and then find out the function of the v.-ing(or present participle)in each sentence.(Teacher goes among the students to help them.)(A few minutes later)T:OK.Who wants to say?S2:Let me try.In No.1 and 2,the v.-ing is used as attribute.In No.3 and 4,the v.-ing is used as adverbial.T:Youre right.We should notice No.3 and 4.When the action takes place at the same time or immediately before the action indicated by the main verb,we use the v.-ing form.When the action has been finished before the action indicated by the main verb,we should use the perfect participlehaving done.Is that clear?Ss:Yes.CStep PracticeT:Now,lets do some exercises.Look at the screen,please.Change the clause into a v.-ing form in each sentence.You can make any change if necessary.You may discuss in pairs.(Show the following on the blackboard)1.As Peter was feeling ill,he decided to stay at home.2.When I had finished my homework,I began to preview my lessons.3.If you heat water,you can change it into steam.4.They stood at the east end of the bridge and waited for the bus.Suggested answers:1.Being ill,Peter decided to stay at home.2.Having finished my homework,I began to preview my lessons.3.Heating water,you can change it into steam.4.They stood at the east end of the bridge,waiting for the bus.T:From the sentences above,we can see that the v.-ing form can be used to express cause(1),time(2),condition(3)and manner or acpanied situation(4).Generally speaking,when the v.-ing form is used to express cause,time or condition,it is often put before the main clause;when it is used to express manner or acpanied situation,it is often put after the main clause.Are you clear about it?Ss:Yes.CStep ConsolidationT:Now lets do some exercises on the screen.You can discuss in pairs.Then Ill check the answers.(Show the following on the screen.)plete these sentences with the given words using the v.-ing forms:1._a brave woman,the servant let him into the castle.(be)2._fire to the castle,the two escaped into the woods.(set)3.With his heart_hard,he knocked at the door.(beat)4._for three days,the revolutionary arrived at the castle.(travel)5.While_near the gates,he saw a vegetable cart ing along the road.(wait)Suggested answers:1.Being 2.Having set 3.beating 4.Having travelled 5.waiting(A few minutes later,teacher checks the answers.)T:Now lets look at the third part:Past Participle.(Write them on the blackboard.)We know that the Past Participle can be used as attribute to modify a noun.Now look at these sentences.(Show the following on the screen.)1.The stolen car was found by the police last night.2.I received the letter written by my old friend Jane.T:Can you tell us the difference between the Past Participles used in these two sentences?S3:Let me try.The Past Participle in the first sentence is put before the noun it modifies,but the one in the second sentence is put after the noun it modifies.T:Yes,youre right.Does anyone know why?S4:I think its because in the first sentence,the Past Participle is only one word,but in the second sentence,its a Past Participle phrase.T:Thats right.Now,look at some different sentences.(Show the following on the screen.)1.Dont speak until spoken to.2.Given more time,we could do the work better.3.Destroyed by the earthquake,the house had to be rebuilt.T:What are these Past Participles used as?Ss:Theyre all used as adverbial.T:Yes.Youre right.And we know that the Past Participle as Adverbial can express different adverbials,such as time,cause,condition,manner.Do you know what the Past Participle in each sentence expresses?Who knows?S5:The Past Participle in the first sentence expresses time.The second one expresses condition.And the last one expresses cause.T:Lets look at the blackboard.(Teacher writes the following on the blackboard.)1.Seen from the hill,our school looks more beautiful.2.Seeing from the hill,we can see our beautiful school.T:Look at these two sentences carefully.Who can tell us the difference between them?S6:The first sentence uses the Past Participle as the Adverbial while the second sentence uses the Present Participle as the Adverbial.T:Good.Do you know why?S7:Because the subject in the first sentence is “our school”,but in the second sentence the subject is “we”.T:Very good.When we are using Participles,we should pay attention to the subjects in the sentences,and the Participle we use must have the same logical subject as the subject in the sentence.If the subject in the sentence receives the action,we should use the Past Participle as Adverbial;if the subject in the sentence does the action,we should use the Present Participle as Adverbial.Is that clear?Ss:Yes.CStep PracticeT:OK.Now,look at the screen.Lets do some more exercises.You may discuss with your partner.(Show the following on the screen.)1.As soon as she entered the room,the girl caught sight of the flowers_by her mother.A.buying B.being bough C.were bought D.bought2._along the street,he came across his old friend.A.Walking B.Walked C.Walk D.To walk3.The man_Li Ming used to live here.A.called B.calling C.to call D.call4.The sports meet_last week is very important.A.holding B.being held C.held D.holdSuggested answers:1.D 2.A 3.A 4.CCStep TestT:Thats all for the three parts.Now lets have a test.You have to do it by yourself.After a while,Ill check the answers.Look at the screen.(Show the following on the screen.)1._the past,our life is much better.Aparing with B.Be paredC.To pare with Dpared with2.I went to see him,_him out.A.finding B.find C.only to find D.to finding3.He was so foolish_his car unlocked.A.to leave B.that leave C.as to leave D.for him to leave4.Why do you stand and watch the milk_over?A.boiling B.boiled C.from boiling D.having been boiled5.I regret_you that we are unable to offer you employment.A.informing B.having informedC.to inform D.to informing6.Excuse me,but its time to have your temperature_.A.taking B.to be taken C.take D.taken7.This book is worthy of_twice.A.reading B.read C.having read D.being read8._from space,the earth,with water_seventy percent of its surface,looks like a blue ball.A.Seen;covered B.Seen;coveringC.Seeing;covering D.Seeing;covered9.Why do you have the lights_all night long?A.burn B.to burn C.burning D.burned10._in the heavy snow,he walked into a shop.A.Having caught B.To be caught C.Having been caught D.CatchingSuggested answers:1.D 2.C 3.C 4.A 5.C 6.D 7.D 8.B 9.C 10.CCStep HomeworkT:After class,you should do more exercises to master them.OK.Time is up.So much for today.See you tomorrow!Ss:See you tomorrow!CStep The Design of the Writing on the BlackboardUnit 16 The United States of AmericaThe Fifth PeriodNon-finite Verbs.The Infinitivemake,have,let,feel,listen to,hear,watch,look at,see,notice,observe etc.The v.-ingadmit,avoid,consider,delay,dislike,enjoy,escape,excuse,feel like,finish,give up,cant help,imagine,mind,miss,practise,suggest,understand.Past Participle1.Seen from the hill,our school looks more beautiful.2.Seeing from the hill,we can see our beautiful school.CStep Record after Teaching