Unit 3 Grammar and usage 教學設計.doc

Unit 3 Grammar and usage 教學設計Step 1 lead-inAsk the Ss the definition of the unreal conditionalsStep2 Learning 時間 從句 主句與現(xiàn)在事實相反If +主語+動詞的過去式(be-were)主語+ would / could/ might+動詞原形與過去事實相反If+主語+had +過去分詞主語+ would/ could/might + have+過去分詞與將來事實相反If+主語+were to/(should) + 動詞原形主語+ would / could/ might+動詞原形注: 當從句的if省略時， 句子要倒裝， 如If I were you, I would not do that. _, I would not do that.在if I /he/she/it 之后, 可用were代替was。兩者在意義上沒有區(qū)別, 但是were更為正式, 特別是在稱述心存懷疑的事情時:If she were ready, we would go.在與將來事實相反的條件從句中,我們可以用were to或should +do來表示,如:If I were to fail my English test, I would have to take it again at the end of the term.If he should come tomorrow, I would talk to him about it. 虛擬條件句中的省略與倒裝在非真實條件句中,如果有were, had, should, 我們可以將if省略,把這些詞置于句首,采用倒裝形式,如: If I should meet her, I would tell her. = _, I would tell her. If I were in your position, I would do it better. = _, I would do it better. If they had made preparations, they would have succeeded.=_, they would have succeeded.Step3 Further learning 錯綜時間條件句非真實條件句中, 主句謂語動詞所表示的動作和條件從句中謂語動詞所表示的動作并不同時發(fā)生, 這時動詞的形式并不完全按照上述表格來進行, 而需要按照各自的時間來調(diào)整, 這樣的句子就叫錯綜時間條件句。e.g. 1) If you had followed the doctors advice, then you would be all right now.2) If I hadnt finished my composition by now, I would be working on it tomorrow.3) If she had prepared well for her lessons yesterday, she wouldnt have so many difficulties now. 含蓄條件句有時一個假設的情況并不用條件從句表示,而用其它方式來表示,這樣的句子叫含蓄條件句。1.用with, without等介詞短語或分詞短語或者獨立主格結(jié)構(gòu)來代替條件從句。We might have died without your help. =We might have died if you hadnt helped us.Having known in time, we could have stopped it. = If we had known in time, we could stopped it.Step4 高考鏈接1. I have no idea what he will do with them all and it took up a lot of time. (P42)考點1 idea作先行詞時的同位語從句?？祭?Do you have any idea _ is actually going on in the classroom? (遼寧2005) Athat Bwhat Cas Dwhich 考點2 take up 考例1 After he retired from office, Rogers _ painting for a while, but soon lost interest. (山東2006)A. took up B. saved up C. kept up D. drew uptake up在這里是“開始學習”的意思。save up儲蓄；keep up維持,繼續(xù)； draw up擬定,起草。Step5 Discussion:What would you do if you had a?Magic Lantern, Magic Brush, Magic Stick, Time MachineStep6鞏固練習1._ for the free tickets, I would not have gone to the films so often. A. If it is not B. Were it not C. Had it not been D. If they were not2. He came late, otherwise he _ the first bus. A. caught B. would catch C. would have caught D. had caught3. Mary was going to the wedding if her friend _ her. A. hadnt called on B. didnt call at C. didnt call on D. hadnt called at4. -Lets stop watching the boring TV programme, Jack! -If you dont watch it, I _, either. A. dont B. wont C. am not D. stop 5. -Shall I tell John about the bad news? -No, you _. I think that will make him sad. A. neednt B. wouldnt C. shouldnt D. mustnt6. Why did you throw the bottle out of the window? You _ somebody. A. might hurt B. could have hurt C. would hurt D. must have hurt 7. From what I hear about their hotel and the weather, they _ their holiday very much. A. would have enjoyed B. shouldnt have enjoyed C. neednt have enjoyed D. cant have enjoyed 8. -Did you hear me come in last night? -No, I _ asleep. A. cant be B. must be C. must have been D. couldnt have been9. -Ill pay you by cheque monthly. -Id rather you _ me cash weekly. A. pay B. will pay C. are to pay D. paid10. The doctor said, “Sir, you _ be sitting in this waiting room. Its for the children only.” A. oughtnt to B. cant C. mustnt D. wont11. -Did Wei Hua have breakfast before going to school yesterday? -No, but I think he _ have. A. will B. may C. should D. must12. -Mum, may I got out and play? -No, you _ . A. wont B. dont C. arent able to D. cant 13. They didnt want to come with us at first. But then we _ persuade them. A. had managed to B. were able to C. did try to D. would have to 14. -No one was prepared for Mr Hills quest