1、教 案題目（教學章節或主題）： if引導的條件狀語從句授課日期：授課時間：教學重點、難點：重要性：典型例題： 1. Ask him to ring me up if you _ him. A. see B. saw C. would see D. will see2. If people _ polluting the air, animals and plants will die soon. A. dont stop B. didnt stop C. shall not stopD. havent stopped3. Can I stay at home tomorrow?Yes, you

2、 can if it_. A. will snow B. is going to snow C. snows D. Snowed4. I dont know if he _ this afternoon. But if he _, I will tell you. A. will come; will do; B. comes; will do C. will come; does D. comes; does 5. If you had enough money, what _? A. will you buy B. would you buy C. would you have bough

3、tD. will you have bought6. Many Chinese movie stars now have given up their Chinese nationality. If I were them, I _ that. A. shouldnt do B. didnt do C. hadnt done D. wont do7. Ifthere nobuyingandsellingofanimals,there nokillinginnature. A.is;willheB.willbe;willbeC.is;isD.willbe;is8. Fmwaitingformyf

4、riend. ,Illgoshoppingalone. A.IfshecomesB.IfshewontcomeC.Ifshedoesntcome9. Thestudents_haveasportsmeetingthisweekendifit_。A.wont;rainsB.will;rainsC.wont;willrainD.aregoingto;isgoingtorain總結：本次教學評價：非常滿意 較滿意 一般 家長或學生簽字 共 小時本節課回訪記錄：任課老師簽字： 主任簽字： 日期：講 義 學生： 任課教師：教學內容： if條件句 If people obey the traffic ru

5、les, there will be fewer accidents. 結構：if引導的條件狀語從句既可以放在句子前，也可以放在句子后。從句位于主句之前時，常用逗號將 其與主句隔開。 if:從屬連詞，意思是：“如果，假如，倘若” 原句可改為：There will be fewer accidents if people obey the traffic rules.時態： if引導的條件狀語從句，主句用一般將來時（will）,從句用一般現在時（主將從現）。 If it rains（從句）， I will stay at home. Ill go with you if you dont wan

6、t to go alone（從句. 如果主句是祈使句，從句要用一般現在時 Dont go and play football if you dont finish your homework. Please call me if he comes next Sunday. 主句謂語中也可以含有情態動詞，如：must,can,could,should等 【注意】主句謂語中也可以用had better(not)do,提建議 If you drive too fast, you may have an accident. You must stop if the traffic is red. If

7、 the traffic lights are red,you must stop and wait. 如果交通指示燈是紅的，你必須停下來等一等。 If you want to lose weight,you had better take some exercise. 如果你想減肥，你最好鍛煉。練習：用所給單詞的正確形式填空 1. If you _ (want) to listen to music, _ (choose) a CD. 2. If you _ (buy) a new camera, _(get) a good one. 3. If the light _ (not come)

8、 on, _ (wait) for one minute. 4. If it _ (not work) , _ (wait) a minute and then _(try) again. 5. If you _ (not know) how to use the camera, _ (read) the instructions. 6. If you _(feel) tired, you _ (have) to have a rest. 7. Where _ he _(see) the film if he _(have) time? 8. If there _(be) fewer tree

9、s, there _( be) more pollution. 9. He _(dress) more casually if he _( not work) on weekends. 10. If Marcia _(live) alone, she _( keep) a pet parrot.【拓展】 if的反義詞：if.not.=unless,意思是：“如果不，除非”練習：1. I wont go there unless I hear from you.(同義句) I wont go there _ I _hear from you. 2. I wont go to the party

10、if I am not invited. (同義句) I wont go to the party_I am invited.條件句的轉換：1. 有if引導的條件狀語從句的復合句中，當主句和從句的主語均為you時，可轉換為“祈使句，and+簡單句”或“祈使句，or+簡單句” You can pass the exam if you work hard. ，and you will pass the exam. If you dont hurry up,you will be late again. Hurry up, you will be late again.2. 借助介詞with 或wi

11、thout來轉換。 If you help me, Ill finish my job soon. , Ill finish my job soon. 如果你幫我，我將很快完成我的工作。 If there is no water, fish may die. Fish may die . 如果沒有水，魚可能會死。 【注意】1. 在if引導的條件狀語從句中，當主句是一般將來時時，不能夠使用be going to結構，而要用will。 Ill help you with your English if I am free tomorrow. 如果明天我有空，我會幫你學英語。 2. 在if引導的條件

12、狀語從句中不能夠使用some，而要用any。 If you have any questions to ask, please come to my office. 如果你有問題要問的話，請到我辦公室來。1. If you _ an interesting day out, _ the Science Museum. A. want; visiting B. want; visit C. want to; visit D. wanting; visit2. If the pure water is heated to 100 centigrade degrees, it _ boil. A.

13、is going to B. will C. would D. is toIf條件句的虛擬語氣：表示說話人的愿望、假設、猜測或建議，而不表示客觀存在的事實。 If I were a child, I would be happier. If he were a bird , he could fly in the big blue sky. If I had a lot of money, I would buy a villa（別墅）. 時間從句主句與現在事實相反 were/did(動詞過去式）.would/could do(動詞原形) would/could/should +動詞原形練習：

14、1. Mary is ill today. If she _, she _ absent from school. A. were not ill; wouldnt be B. had been ill; wouldnt have been C. had been ill; should have been D. hadnt been ill; could be2. If I knew you were coming, I _ you at the airport. A. had met B. met C. would meet D. would have met練習：1.Daina ( wi

15、ll go/go/goes) to Europe if she (will pass/pass/passes) the exams .2. The graduates (will teach/teach/teaches) in the poor village if the Ministry of Education (will agree/ agree/agrees) soon.3. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once.4. If it (won

16、t/dont/doesnt/ isnt) rainy, we (will take/ take/takes) walk outside.5. If a UFO (will land/land/lands) in front of me, I (will go/go/goes) in to look for the alien.6. Lana _( buy) a new dress if the old one _(be) out of style.7.The twins _(fight) if they_(argue).8. I _(have) a bake sale if I _(need)

17、 money for education.10. If Mr Green _(say) I am hard- working, my parents _( feel) glad.11.I _(go) to the beach if it_ ( not rain) this week.12. _they _( have) a match if the P.E. teacher _(be) busy?13.He _(write) a letter to his grandparents if he _(get) his report card this week.14. If she _(get)

18、 up late, she _ ( not catch) the early bus.If條件狀從句練習鞏固練習姓名： 章睿 學科：英語任課老師：分數：主任簽字：家長簽字：一、單項選擇（ ）1.Ifyou_totheparty,youllhaveagreattime A.willgo B.went C.go D.going（ ）2.Whatareyougoingtodotomorrow?-Wellgotothelibrarytomorrowifit_. A.isntrain B.rain C.wontrain D.doesntrain（ ）3.Whatwillyoudoifyou_totheo

19、ldfolkshomevisit? A.go B.went C.going D.willgo（ ）4.IfIeat_food,Illbeveryfat. A.toomany B.manytoo C.toomuch D.muchtoo（ ）5.Illgivethebooktohimifhe_herenextSunday. A.willcome B.comes C.iscoming D.came（ ）6.I_hertheanswerifshe_me. A.cantell,willask B.willtell,willask C.wouldtell,ask D.willtell,asks（ ）7.W

20、ellgotothefarmandhelpthefarmerswiththeapple-pickingifit_tomorrow. A.wontrain B.willberainy C.doesntrain D.isntraining（ ）8.Thereisgoingto_asportsmeetingnextweek.Ifit_,wellhavetocancelit. A.be,willrain B.have,willrain C.be,rains（ ）9.Yourteacherwillbeunhappyifyou_toschoollate. A.come B.willcome C.areco

21、ming D.came（ ）10Idontknowifhe_.Ifhe_,pleaseletmeknow. A.comes,comes B.willcome,willcome C.willcome,comes D.comes,willcome（ ）11Youwillstayhealthy_youdomoreexercise,suchasrunningandwalking. A.ifB.howC.beforeD.where（ ）12. Ifshe heretomorrow,Iwilltellyou. A.comesB.willcome C.comeD.came（ ）13.Imwaitingfor

22、myfriend. ,Illgoshoppingalone. A.Ifshecomes B.Ifshedoesntcome C.Ifshewontcome（ ）14.Tomwantstoknowifyouwillhaveapicnictomorrow.Yes.Butifit_,wellplaychessinstead. A.willrainB.rainedC.israiningD.rains（ ）15.IfTom_thegame,wellgivehimasurprise. A.winB.winsC.wonD.miming二、用所給詞的適當形式填空。1.Ifyou_(feel)tired,you

23、_(have)tohavearest.2.Where_he_(see)thefilmifhe_(have)time?3.Ifthere_(be)fewertrees,there_(be)morepollution.4. He_(dress)morecasuallyifhe_(notwork)onweekends.5.IfMarcia_(live)alone,she_(keep)apetparrot.6.Lana_buy)anewdressiftheoldone_(be)outofstyle.7.Thetwins_(fight)ifthey_(argue).8.I_(have)abakesale

24、ifI_(need)moneyforeducation.9.Peter_(send)meabeautifulsouvenirifhe_(tour)Spain.10.IfMrGreen_(say)Iamhard-working,myparents_(feel)glad.11.I_(go)tothebeachifit_(notrain)thisweek.12._they_(have)amatchiftheP.E.teacher_(be)busy?13.He_(write)alettertohisgrandparentsifhe_(get)hisreportcardthisweek.14.Ifshe

25、_(get)uplate,she_(notcatch)theearlybus.15.Peter_(major)inEnglishifhe_(pass)theexamsinPekingUniversity.3 完成句子。1.如果他到的晚了會發生什么事情？What_ifhe_late?2.如果努力學習，你就會取得好成績。Ifyou_,you_good_.3.他如果看電視太久了，他的父母會不高興。Ifhe_TVtoomuch,hisparents_unhappy.4.如果我們為他組織生日聚會，大家都會來的。 Everyone_ifwe_abirthdayparty_him.5.如果明天不下雨，我會和你一起去公園的。I