1、Unit 4Do it yourselfGrammar單詞回顧學生早讀時已預習過本單元單詞，可利用幾分鐘時間帶學生快速回顧溫習。對單詞的熟練度越高，閱讀的速率也越高。cutsentencevt. 剪下，切下，割下n. 句子Words reviewTo learn to give instructionsTo learn to use should & had betterObjectives語法講解建議采用歸納法，如盡可能多的呈現(xiàn)一些相關(guān)例句，或可讓學生從已學課文中找相應(yīng)例句，引導學生試著從所觀察到的語言現(xiàn)象中總結(jié)出語言規(guī)則和語法規(guī)律。Look at the following sentenc

2、es.1. Lets go to the hall, Mum. (七年級上冊 U3)2. Wake up, Eddie! (七年級上冊 U4)3. Great! Lets celebrate. (七年級上冊 U5)4. Lets have a hamburger. (七年級上冊 U6)5. Lets eat apples. (七年級上冊 U6)6. OK. Give me ten. (七年級上冊 U6)7. Lets go to the supermarket. (七年級下冊 U3)8. Lets go down here. (七年級下冊 U4)9. Dont be afraid. Come

3、with me. (七年級下冊 U4)10. Hurry up, Eddie. (七年級下冊 U6)11. Please bring me something to eat. (七年級下冊 U8)12. Lets enjoy ourselves! (八年級上冊 U3)13. We had better go back to the station now, Ken. (新概念1 L95)14. I wont charge you this time. But youd better not do it again! (新概念1 L129)15. Well, next time youd bet

4、ter take my advice! (新概念1 L129)16. He suggested that a double railway- tunnel should be built. (新概念2 L64)17. Of course, we should arrest him (新概念2 L65)Sentences from this unit:1. What should we do?2. Read them first.3. Youd better get some tools.4. Do it yourself.5. Stop it.Guessing Gameto test your

5、 sense of observationto test your ability of short-term memory to test your ability to highlight the language pointsGuess1. _ go to the hall, Mum. 2. _ up, Eddie! 3. Great! _ celebrate. 4. _ have a hamburger. 5. _ eat apples. 6. OK. _ me ten. 7. _ go to the supermarket. 8. _ go down here.9. _ afraid

6、. Come with me. LetsWakeLetsLetsLetsGiveLetsLetsDont be10. _ up, Eddie. 11. Please _ me something to eat. 12. _ enjoy ourselves!13. We _ go back to the station now, Ken. 14. I wont charge you this time. But you _ not do it again! 15. Well, next time you _ take my advice!HurrybringLetshad betterhad b

7、etterhad better16. He suggested that a double railway- tunnel _ be built. 17. Of course, we _ arrest him 18. What _ we do?19. _ them first.20. You _ get some tools.21. _ it yourself.22. _ it.should shouldshouldReadhad betterDoStopKate, _ your homework here tomorrow.A. bring B. brings C. to bring D.

8、bringingYouhadbetter _ onyourcoat. A.toput B.putting C.toputting D.put 以上我們已經(jīng)通過歸納總結(jié)和練習對本課的語法內(nèi)容有了一定的了解，下面就讓我們根據(jù)之前練習的考察情況進一步選擇講解該語法項的重難點。Giving instructions1. 祈使句的概念 祈使句表示請求、命令等。它的主語是you（聽話人），通常不說出。祈使句肯定結(jié)構(gòu)中的謂語動詞一律用動詞原形。祈使句末用驚嘆號或句號，句子用降調(diào)。 2. 祈使句的結(jié)構(gòu) 1) 祈使句的肯定結(jié)構(gòu) Do型（以行為動詞原形開頭），例如： Sitdown!坐下！ Standup!起立！

9、 Be型（以be開頭），例如： Bequiet!安靜！ Becareful！小心！ Let型（以let開頭），例如： Letmetry. 讓我試試看。 Letslookatthemap. 讓我們看看地圖。 lets是letus的簡略式。 表示請求、勸告的祈使句還常常在句前或句末加上please,構(gòu)成句式：Please 或 , please.以使語氣更加緩和或客氣。例如： Pleasestandup. 或 Standup, please. 請站起來。 Pleasehavearest. 或Havearest, please. 請休息一下。 2) 祈使句的否定結(jié)構(gòu)，一律在肯定結(jié)構(gòu)前加Donot(Do

10、nt)。例如： Dontgothere, please. 請別去那兒。Dontbelateforclass! 上課別遲到！Dontlethimin.不要讓他進來。 注意：Lets型祈使句，其否定式也可用 Letsnot ，例如： Letsnothave a rest. 咱們別休息了。 Letsnotsithere!我們不要坐在這兒！ should & had better當我們給他人提建議時，可以用had better和should，表示“最好”或“應(yīng)該”做某事， had better的語氣比should強一些。You had better refrigerate the beer befor

11、e drinking it. 喝啤酒前你最好先把它冷凍一下。You should exercise more. 你應(yīng)該多鍛煉。had better (常簡略為d better)，是一固定詞組，后面必須跟動詞原形，沒有人稱和數(shù)的變化。構(gòu)成：had better do sth. 句型。Youd better go to hospital at once. 你最好立即去醫(yī)院看病。 Tom, youd better go there today. 湯姆，你最好今天去那兒。had better 的否定式是將not直接放在had better的后面。 You had better not miss the

12、 last bus. 你最好不要錯過末班公共汽車。 should 后面也要跟動詞原形，且沒有人稱和數(shù)的變化。You should stop smoking. 你應(yīng)該戒煙。should 的否定式是should not/shouldnt。You shouldnt drink and drive. 你不應(yīng)該喝酒后開車。1. 當我們向他人發(fā)出命令、提出要求或建 議時，常使用祈使句。其主語通常不明 確表示出來。其否定形式是在動詞原形 前加do not/dont。為了表示客氣和禮 貌，可以加上please。2. 當我們給他人提建議時，可以用had better和should，表示“最好”或“應(yīng)該”做 某事

13、。否定形式是had better not和 should not/shouldnt。Reflection請點擊I. 單項選擇。1. The TV is too loud. Please _. A. turn it down B. to turn it down C. turn down it D. to turn down it2. _ late again, Bill!A. Dont to be B. Dont be C. Not be D. Be not3. _ cross the road until the traffic lights turn green. A. Not B. Wo

14、nt C. Doesnt D.Dont4. _ me the truth, or Ill be angry.A. Telling B. To tell C. Told D. TellII. 句型轉(zhuǎn)換。1. Will you please read it again more slowly? (改為祈使句)_ again more slowly, please.2. If you dont listen to me, Ill go. (改為同義句) _ me, or Ill go.3. The teachers often tell the students not to be careless

15、.(改為祈使句)_ careless, please.4. Please sit next to Nancy.(改為否定句)_ next to Nancy.Read itListen toDont beDont sitIII. 完成句子。1. 你應(yīng)該在南京換火車。 _ change trains at Nanjing.2. 你最好在下雨前回家。 _ before the rain starts. 3. 現(xiàn)在你最好別打棒球了。 _ baseball now.4. 不要把金魚放在陽光下。 _ the goldfish in the sun.You shouldYoud better go homeYou had better not playDont putPreview To preview I