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1、Grammar,Unit 4,Turn left!,Guessing Game,Turn right!,Guessing Game,Walk on the zebra crossing!,Guessing Game,Guessing Game,Dont smoke! No smoking!,Guessing Game,Dont park your car!,Guessing Game,Dont pick the flowers!,Read and observe(观察),Turn left!,Turn right!,Walk on the zebra crossing!,Dont smoke!
2、,Dont park your car!,Dont pick the flowers!,They are all imperative sentences.（祈使句）,句子,祈使句的结构如下： do sth Dont do sth.,肯定：,否定：,祈使句表示请求、命令、建议等等。 谓语动词一律用原形。 句子中通常不用主语，句末用感叹号或者句号。,Draw the conclusion (得出结论),祈使句句式详解,1. 肯定的祈使句 （1）动词原形+其他 Stand up, please. = Please stand up. 请起立。 （2） Be + adj. Be careful! =
3、 Look out! = Take care! 小心 / 当心！ （3） Lets + 动词原形 Lets go to school together. 咱们一起上学去吧。,祈使句句式详解,2. 否定的祈使句 （1） Dont + 动词原形 Dont stand up. 别站起来。 Dont be careless. 别粗心。 Dont let them play with fire. 别让他们玩火。 （2） Lets ( let sb ) + not + 动词原形 Lets not say anything about it. 对于这件事，咱们什么也别说。 Let them not play
4、 with fire. 别让他们玩火。,祈使句句式详解,与please连用,使语气委婉 为使语气委婉，通常将祈使句与please连用。Please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： Please dont get angry. 请不要生气。 Please drive more slowly. 请开得慢一点。 Try to be quiet, please. 请设法保持安静。,Put up a picture on the wall.,Put up a shelf on the wall.,Try to give instructions,Dont swim he
5、re.,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,1. Cut out the card.,2. Write some words on the card.,How to make cards,3. Draw a picture on the other side of the card.,4. Look at the pictu
6、re 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 tell,turn,Go,Exercises,3 -We have to finish the work in two h
7、ours. - Then lets_ any time. (waste) 4 -_so much noise, please. - Ok. (make),not waste,Dont make,Using should and had better,We use should and had better when giving advice and telling people what is the best or right thing to do. The tone of had better is stronger than should.,had better do sth had
8、 better not do sth It is pretty cold. Youd better put on my coat. Shed better not play with the dog. should do sth should not do sth You should be quiet in class. You should not be late for school.,1. Please know a little about DIY.,You should know a little about DIY.,We use should and had better wh
9、en giving advice and telling people what is the best or right thing to do.,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.,We use should and had better when giving advice and telling people what is the best or rig
10、ht thing to do.,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.,We use should and had better when giving advice and telling people what is the best or right thing to do.,4. Dont paint the whole room blu
11、e.,You should not/shouldnt paint the whole room blue.,You had better not paint the whole room blue.,We use should and had better when giving advice and telling people what is the best or right thing to do.,DIY advice,Read the advice and make sentences with should (not) or had better (not).,buy some
12、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,Read the advice and make sentences with should (not) or had better (not).,join a DIY club to learn more about it,You should join a DIY club to learn more about it.,You had be
13、tter join a DIY club to learn more about it.,DIY advice,Read the advice and make sentences with should (not) or had better (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,Read the advic
14、e and make sentences with should (not) or had better (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,Read the advice and make sentences with should (not) or had better (not).,be patient,
15、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. give 2. _ careful, Jenny! There is a tree in front of you. A. Am B. / C. Be D. Was 3. Lets _ our time. A. not waste B. no wasting C. not to waste D. no waste 4. _ higher, and you will see the house. OK. A. If you stand B. To stand C. When you stand D. Stand,Exercises:,5. Please _ do it. A. he B. let him C. let he D. him 6. _ let anyone open the door. A. Dont B. Will C. Not D. No 7. Dont be late again. Sorry, _. A. I may B. I must C. I will D. I wont 8. Call me when
