Grammar—if條件句.ppt

1、GrammarIf Conditional (If條件句）制作人：閆小英 焦作市武陟縣城關(guān)高中,教材分析： If Conditional 是高中英語(yǔ)模塊2單元4中的語(yǔ)法知識(shí)點(diǎn)。If條件句包括真實(shí)條件句和虛擬條件句，即Zero Conditional, First Conditional, Second Conditional 和 Third Conditional。其中Zero Conditional和First Conditional 屬于真實(shí)條件句，Second Conditional 和 Third Conditional 屬于虛擬條件句。這一語(yǔ)法知識(shí)點(diǎn)是英語(yǔ)語(yǔ)言學(xué)習(xí)中的重難點(diǎn)。 教學(xué)目

2、標(biāo)： 學(xué)習(xí)并了解If 條件句 ； 學(xué)會(huì)區(qū)別真實(shí)條件句和虛擬條件句； 學(xué)習(xí)各個(gè)虛擬條件句； 學(xué)習(xí)虛擬條件句試題的應(yīng)對(duì)技能。 教學(xué)重難點(diǎn)： 區(qū)別真實(shí)條件句和虛擬條件句； 辨別虛擬條件句的時(shí)態(tài)； 虛擬條件句的類(lèi)型。 教學(xué)手段和方法： 師生合作；生生合作；有講有練，講練結(jié)合。,教學(xué)步驟Teaching Steps,Step 1. Leading The teacher will show the students some sentences on the blackboard , and ask the students to translate them into English. .如果天氣很冷

3、的話，池里的水就會(huì)結(jié)冰。 If it is too cold, the water in the pool freezes. .如果我到北京去，我就去拜訪你。 If I leave for Beijing, I will visit you. .,.如果你尊敬別人，他們也會(huì)尊敬你的。 If you respect others , they respect you as well . .如果你解決不了這個(gè)問(wèn)題，我就會(huì)幫助你 。 If you have some difficulty in solving the problem, I will help you.,Step 2. If 條件句的

4、類(lèi)型,Zero Conditional 真實(shí)條件句 First Conditional If條件句 Second Conditional 虛擬條件句 Second Conditional,Step3. 真實(shí)條件句,1. Zero Conditional 表示闡述事實(shí)或真理的條件句 . If you eat a lot of food every day, you put on weight. . If lions are hungry, they hurt other animals. . If you know the answer, put up your hand please.,2.

5、First Conditional 依據(jù)條件未來(lái)可能發(fā)生的事,-Have you seen Tom, Jack? -No.If Tom _back,I _ you . A.come; tell B.comes; will tell C.comes; tell D.willcome;will tell 答案：B,. I wont go to your party _ I am invited . A. if B. as long as C.unless D.when 答案：C *unless = if.not,小結(jié)：,Step 4. 虛擬條件句,如：If I were you, I would

6、choose to work in the company. 假如我是你的話，我就會(huì)選擇在這家公司工作。 （事實(shí)是我顯然不是你。） *虛擬條件句，表示假設(shè)的情況與事實(shí)相反。,1.Second Conditional -與現(xiàn)在或?qū)?lái)的事實(shí)相反 如： If I knew his telephone number, I would tell him about it. (與現(xiàn)在事實(shí)相反-事實(shí)是我不知道他的電話號(hào)碼。) If it rained tomorrow, our sports meet would be put off. （=were to rain或 should rain）( 與將來(lái)事實(shí)

7、相反-事實(shí)是明天很可能不會(huì)下雨。),2. Third Conditional -與過(guò)去的事實(shí)相反。 如： If you had worked hard, you would have easily passed the final test. (事實(shí)是你沒(méi)有努力。) If he had taken my advice, he might not have made such a bad mistake.( 事實(shí)是他沒(méi)有聽(tīng)我的建議。),小結(jié)：虛擬條件句的用法,Step 5. Exercises 1. Sorry, I am too busy now. If I _ time, I would c

8、ertainly go for an outing with you. A.have had B.had had C. have D. had 2. Grace doesnt want to move to New York because she thinks if she _ there, she wouldnt be able to see her parents very often. A. lives B. would live C. has lived D. were to live,3. I should not have laughed if I _ you were seri

9、ous. A.thught B. would think C. had thought D.have thought 4. -If you _ to my birthday party last Saturday, you would have met our old friend Jim. - Oh, what a pity! A.came B. had come C. would come D. would have come,5. I _ my parents for help if I _ you. A.had asked; am B. asked ;were C. would ask

10、ed ; were D. ask; were 答案1.D2.D3.C4.B5.C,Step6.錯(cuò)綜時(shí)間條件句,即主從句動(dòng)作不是同一時(shí)間發(fā)生。 難點(diǎn)：區(qū)分主從句動(dòng)作發(fā)生的時(shí)間 6. If we _ a table earlier, we wouldnt be standing here in a queue. A. have booked B.booked C. book D.had booked 答案：D 7.You didnt accept my help. If we _ it together, you _ so tired. A.did ; didnt get B.do; wouldn

11、t get C.were doing ; wouldnt D.had done; wouldnt get 答案：D,即不用if 而用without; but; but for; otherwise/or等表示某種假設(shè)情況。 8.But for the help of my English teacher, I _ the first prize in the English Writing Competition. A. would not win B. would not have won C. had win D. would have won 解析： 此題為虛擬條件句，but for (

12、或without) the help of my English teacher=If there hadnt been the help of my English teacher，與過(guò)去事實(shí)相反，故主句時(shí)態(tài)應(yīng)為would not have won 。難點(diǎn)：辨別主句和從句；找準(zhǔn)動(dòng)作發(fā)生的時(shí)間。 答案B,Step7.含蓄條件句,9. -Why are you so late? -I got stuck in the traffic jam, or I _ earlier. A.arrived B.have arrived C.would arrive D.would have arrived

13、答案：D,Step8. 省略條件句,即省略if將were;should;had提到句首的虛擬條件句，是部分倒裝的一種形式。 If I had got up earlier, I wouldnt have been late. Had I got up earlier, I wouldnt have been late.,10. I didnt know he was in the company._ it, I _ then. A.Had I known ; would call on him B.should I know ; would have called on him C.If I

14、knew; would call on him D.Had I known ; would have called on him 答案D 11. _ Tom pass the exam,his parents would buy a very good bike for him. A. Should B. Was C. Will D. Would 答案A,Step9.易錯(cuò)現(xiàn)象,真實(shí)和虛擬不分； 1.If it should rain tonight,we wouldnt go to the cinema.( ) If it rains tonight, we wont go to the ci

15、nema.( ) 2. They _two free tickets to Canada，otherwise theyd never have been able to afford to go. A.had got B.got C.have got D.get 答案:B,主句和從句不分； 1. If he_my advice，he wouldnt have lost his job. Afollowed Bshould have follow Chad followed Dwould have follow 答案:C 2. -Thank you for reminding me of the

16、 time, or I _late yesterday. -Dont mention it. Ashould be Bwould be Cwill have been Dwould have been 答案: D,時(shí)態(tài)不分。 3. -The weather has been very hot and dry. -Yes. If it had rained even a drop，things would be much better now！And my vegetables_. Awouldnt dieBdidnt die Chadnt died Dwouldnt have died 答案：

17、A 4. -I didnt attend the lecture yesterday. -I_，either，if my mother hadnt reminded me. AWouldnt BWouldnt have CDidnt DHadnt 答案：B,1.真實(shí)條件句,2.虛擬條件句,小結(jié),*3. 虛擬條件句 主從句同一時(shí)間發(fā)生的虛擬條件句 錯(cuò)綜時(shí)間條件句 含蓄條件句 省略條件句,*4.虛擬條件句的解題技巧 辨別真實(shí)和虛擬； 辨別主句和從句； 辨準(zhǔn)主從句時(shí)態(tài)。,Step10.Exerises,1.If you _ that film late last night, you wouldnt

18、 be so sleepy. A.didnt see B.havent seen C.wouldnt have seen D.hadnt seen 2. -When will you come to see me,Dad? -I will go to see you if you _ the training course. A. will have finished B. will finish C. are finishing D. finish,3. If you _ tomorrow, we would have the meeting. A. come B. will come C.

19、 came D. are to come 4.If he had tried to leave the country, he _ at the frontier. A. will be stopped B.would be stopped C.would have been stopped D.will have been stopped,5. -Do you have any problems if you_the job? -Well, Im thinkng about the salary. A. offer B. are offered C. will offer D. will be offered,6. I didnt know his telephone number; otherwise I _ him. A. had telephoned B.would telephone C.would have telephoned D.telephone,7. _ for L