【精品】高中英语（人教大纲）第三册：Unit2 Crossing limits(第三课时)

The Third PeriodTeaching Aims:1.Review the words and phrases learnt in the last two periods.2.Review the Predicate.Teaching Important Points:1.How to use the rules of word formation to give another form of the words given.2.How to use the proper form of the given verbs to fill in the blanks.Teaching Difficult Points:1.How to help the students write another form of the given words.2.How to make the students master the Predicate well.Teaching Methods:1.Review methods to help the students remember what theyve learnt before.2.Practice to help the students review the Predicate.3.Individual or pair work to make every student work in class.Teaching Aids:1.the multimedia2.the blackboardTeaching Procedures:Step Greetings and RevisionGreet the whole class as usual.T:Yesterday we learnt a passage about Reaching out across the Ocean.Do you still remember what its about?S1:Yes.About the ocean exploration in the ancient times.T:We also learnt some useful words and phrases.Lets have a dictation now.Please take out a piece of paper.(After that,teacher collects some students.)Step Language StudyT:Turn to Page 14.Lets do some exercises.Look at Ex.1 in Word Study.Please write another word form of the words given.First do it yourselves,and then check your answers with your partner.At last,Ill ask some students to read their answers.Clear?Ss:Yes.T:OK.Go ahead,please.Suggested answers:discover discovery (n.)original origin (n.)equipment equip (v.)correct correction (n.)inspect inspection (n.)evaluate evaluation (n.)possess possession (n.)contribute contribution (n.)ignore ignorance (n.)competition compete (v.)existence exist (v.)wealthy wealth (n.)accurate accuracy (n.)royal royalty (n.)T:From the exercises we can draw a conclusion that some suffixes such as “-ion” “-y” “-ment” “-ty”,when added to some words,can change their part of speech.Understand?Ss:Yes.T:Who can give us some other examples.S2:judgejudgementdirectdirectiondecidedecisionsuccesssuccessful.T:Very good.Now please choose some of the words in Ex.1 to complete the sentences in Ex.2.You can discuss with your partner if you have any difficulty.Four minutes for you to do it.T:(After a while.)Well,I will ask some of you to give the answers.(Teacher asks some students to do it one by one.)Suggested answers:1.contribute2.discovery3.evaluation4.ignored5.existed6.equipment7.possession8.inspect(Do Ex.3 in the same way.)Suggested answers:(1)royal(2)treasures(3)set sail(4)command(5)In return(6)ambassadorStep GrammarT:Now,please look at the sentences on the blackboard.(Teacher begins to write some sentences on the Bb.)(Bb:1.Life goes better when we listen to each other.2.We have made great progress in the past year.3.When I studied in the university,I read aloud every morning.4.He was doing his homework from seven to nine last night.5.The train had left before we got to the station.6.He may have watched TV the whole night.7.He must have been there before.)T:All the underlined parts in these sentences are the Predicate.Now,please read the sentences and translate them into Chinese.Pay special attention to the tense in each sentence.(After the students read for a while,the teacher says the following.)T:Well,Ill ask some studetns to translate them into Chinese.One student,one sentence.Whod like to try the first one?S3:如果我们能够相互倾听对方谈话，那么生活就会变得更加美好。T:Good job.The second sentence,Zhang Zheng,try please.S4:在过去几年里，我们取得了很大的进步。T:Very good.Lets go on.S5:当我在大学学习时，我天天晨读。S6:昨天晚上七点到九点，他正在做作业。S7:我们到达车站时，火车已经离开了。S8:他可能看了一夜电视。S9:他以前一定去过那儿。T:Well done.But you should pay more attention to some of them.First,look at the second sentence.Why is the present perfect tense used in it?S10:Because “in the past year” is a period of time continuing up to the present moment,the present perfect tense is used.Am I right?T:Yes,youre quite right.Next,look at the sixth sentence.What do you think “may have done” here expresses?S11:“May have done” here expresses “guessing something happening in the past”.It is used to express “possibility”.T:Well done.Now,the last sentence.Any volunteers?S12:Here “must have done” is also used to express “guessing something happening in the past”.But it usually refers to a positive situation.T:Terrific!Thank you.Step PracticeT:Now,lets do some practice about the Predicate.Open your books and finish Ex.1 and 2.First do them by yourselves and then check your answers with your partners.At the end,Ill check the answers with the whole class.Are you clear about that?Ss:Yes.T:OK.You can begin.Suggested answers to Ex.1 and Ex.2.Ex.11.discovers2.was reading,called3.can send4.paid off5.was a great puzzle6.was taken7.has been found8.hopes9.had better go,will be late10.is expectedEx.2(1)was(2)stands(3)had become(4)lived(5)sold(6)had been seen(7)drew(8)remainedStep ConsolidationT:Now,look at the sentences on the screen.There are some mistakes in each sentence.Please find them out and correct hem.(Teacher shows the following on the screen.)1.I found the book she lost three days before.2.By the end of this year,the factory will produced 20 000 tractors.3.I studied English since I was ten.4.We have been waiting for her for two hours by the time she came.5.Is this the second time he breaks the world record in the filed and track events?6.We didnt see him at the lecture yesterday.He mustnt attend it.7.Xiao Li is so wet.She must fall into the lake.8.He slipped into the room when no one looked at him.Suggested answers:1.losthad lost2.will producedwill have produced3.studiedhave been studying4.have been waitinghad been waiting5.breakshas broken6.mustnt attendcant have attended7.must fallmust have fallen8.lookedwas lookingStep Summary and HomeworkT:In this class,weve reviewed the words and phrases learnt in the last two periods and practised writing another form of the given words according to the rules of Word Formation.Weve also reviewed the Predicate.After class,you should do more exe