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Grammar Turn left!Guessing GameTurn right!Guessing GameWalk on the zebra crossing!Guessing GameGuessing GameDont smoke!No smoking!Guessing GameDont park your car!Guessing GameDont pick the flowers!Read and observe(观察观察)Turn left!Turn right!Walk on the zebra crossing!Dont smoke!Dont park your car!Dont pick the flowers! They are all imperative sentences.（祈使句）（祈使句）句子句子祈使句祈使句的结构如下：的结构如下： do sth Dont do sth.肯定：肯定：否定否定：v祈使句表示祈使句表示请求、命令、建议请求、命令、建议等等。等等。v谓语动词一律用谓语动词一律用原形原形。v句子中通常不用主语，句末用句子中通常不用主语，句末用感叹号或感叹号或者句号者句号。Draw the conclusion (得出结论得出结论)祈使句句式详解1. 肯定的祈使句肯定的祈使句（1）动词原形动词原形+其他其他Standup,please.=Pleasestandup.请起立。（2） Be + adj. Becareful!=Lookout!=Takecare!小心/当心！（3） Lets + 动词原形动词原形 Letsgotoschooltogether.咱们一起上学去吧。祈使句句式详解2. 否定的祈使句否定的祈使句（1） Dont + 动词原形动词原形Dont stand up. 别站起来。别站起来。 Dont be careless. 别粗心。别粗心。 Dont let them play with fire. 别让别让他们玩火。他们玩火。 （2） Lets ( let sb ) + not + 动词原形动词原形 Lets not say anything about it. 对于这对于这件事，咱们什么也别说。件事，咱们什么也别说。 Let them not play with fire. 别让他们玩别让他们玩火。火。祈使句句式详解 与与please连用连用,使语气委婉使语气委婉 为使语气委婉，通常将祈使句与为使语气委婉，通常将祈使句与please连用。连用。Please可用于祈使句的句首，通常不用逗号可用于祈使句的句首，通常不用逗号如果用于句末，前面通常用逗号。如：如果用于句末，前面通常用逗号。如：Please dont get angry. 请不要生气。请不要生气。Please drive more slowly. 请开得慢一点。请开得慢一点。Try to be quiet, please. 请设法保持安静。请设法保持安静。Put up a picture on the wall.Put up a shelf on the wall.TrytogiveinstructionsDont swim here.Dont park your bike here.Park your bike here.Please go slowly.Dont smoke here.Dont fish here.Be quiet, please.Dont make any noise. How to make cards How to make cards1. Cut out the card.2. Write some words on the card. How to make cards How to make cards3. Draw a picture on the other side of the card.4. Look at the picture and try to say what is on the other side.Dont give up. Keep trying.1 -Its her birthday next week. - Then_ her about the surprise birthday. (tell)2 How can I get to Peoples Hospital?-_ along the street and _ left at the lights.dont tellturn GoExercises3 -We have to finish the work in two hours. - Then lets_ any time. (waste)4 -_so much noise, please. - Ok. (make)not wasteDont makeUsing should and had betterWeuseshouldandhadbetterwhengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.Thetoneofhadbetterisstrongerthanshould. hadbetterdosthhadbetternotdosthItisprettycold.Youdbetterputonmycoat.Shedbetternotplaywiththedog. shoulddosthshouldnotdosthYoushouldbequietinclass.Youshouldnotbelateforschool.1. Please know a little about DIY.You should know a little about DIY.Weuseshouldandhadbetterwhengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.You had better know a little about DIY.2. Please put in a brighter light in the room.You should put in a brighter light in the room.Weuseshouldandhadbetterwhengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.You had better put in a brighter light in the room.3. Dont hit the pipe.You should not/ shouldnt hit the pipe.You had better not hit the pipe.Weuseshouldandhadbetterwhengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.4. Dont paint the whole room blue.You should not/shouldnt paint the whole room blue.You had better not paint the whole room blue.Weuseshouldandhadbetterwhengivingadviceandtellingpeoplewhatisthebestorrightthingtodo. DIY advice Readtheadviceandmakesentenceswithshould(not)orhadbetter(not). buy some to learn more about it You should buy some to learn more about it. You had better buy some to learn more about it. DIY advice Readtheadviceandmakesentenceswithshould(not)orhadbetter(not).join a DIY club to learn more about it You should join a DIY club to learn more about it. You had better join a DIY club to learn more about it. DIY advice Readtheadviceandmakesentenceswithshould(not)orhadbetter(not).begin your work without reading them You shouldnt begin your work without reading them. You had better not begin your work without reading them. DIY advice Readtheadviceandmakesentenceswithshould(not)orhadbetter(not). play with them when you do DIY jobs You should not play with them when you do DIY jobs. You had better not play with them when you do DIY jobs. DIY advice Readtheadviceandmakesentenceswithshould(not)orhadbetter(not). be patient You should be patient. You had better be patient.Lets do exercise.1. Jim, _ me a hand. A. gives B. is giving C. will give D. give2. _ careful, Jenny! There is a tree in front of you. A. Am B. / C. Be D. Was3. Lets _ our time. A. not waste B. no wasting C. not to waste D. no waste4. _ higher, and you will see the house. OK. A. If you stand B. To stand C. When you stand D. Stand5. Please _ do it. A. he B. let him C. let he D. him6. _ let anyone open the door. A. Dont B. Will C. Not D. No7. Dont be late again. Sorry, _. A. I may B. I must C. I will D. I wont8. Call me when you get home. OK, _. A. I must B. I can C. I will D. I may9. _ forget to write to me when you _ get there next Tuesday. A. Dont; will B. Please; will C. Please; / D. Dont; /10. _ let anyone open the door. A. Dont B. Will C. Not D. No11. _ 6 and 4, and you will get ten. A. Added B. Adding C. To add D.Add12. ._ late again, or Ill report it to your father. A. Dont be B. You arent C. Cant be D. Arent13. - Can I leave this door open at night? -You _ better not .A. should B. would C. could D. had14.You _ smoke while you are walking around in the woods here. A. should B. shouldnt C. shouldnt to D. should to
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