Unit 4 Grammar 黄 - 副本.ppt

1、Grammar 1,Unit 4,Look at the following sentences.,1. Wake up, Eddie! (七年级上册 U4) 2. OK. Give me ten. (七年级上册 U6) 3. Dont be afraid. Come with me. (七年级下册 U4) 4. Hurry up, Eddie. (七年级下册 U6) 5. Please bring me something to eat. (七年级下册 U8),Giving instructions,Giving instructions,Put up a picture on the wa

2、ll.,Put up a shelf on the wall.,We start a sentence with the base form of a verb when we want to tell people what to do.,Dont swim here.,Dont park your bike here.,We add dont in front of the verb when we want to tell people not to do something.,No swimming.,Park your bike here.,Please go slowly. Slo

3、w down,please.,More instructions,Dont smoke here.,Dont fish here.,More instructions,No smoking.,No fishing.,Be quiet, please.,Dont make any noise.,More instructions,1. 祈使句的概念 祈使句表示请求、命令等。它的主语是you（听话人），通常省略。祈使句肯定结构中的谓语动词一律用动词原形。祈使句末用惊叹号或句号，句子用降调。 2. 祈使句的结构 1) 祈使句的肯定结构 Do型（以行为动词原形开头），例如： Sitdown!坐下！ S

4、tandup!起立！, Be型（以be开头），例如： Bequiet!安静！ Becareful！小心！ Let型（以let开头），例如： Letmetry. 让我试试看。 Letslookatthemap. 让我们看看地图。 lets是letus的简略式。, 表示请求、劝告的祈使句还常常在句前或句末加上please,构成句式：Please 或 , please.以使语气更加缓和或客气。例如： Pleasestandup. 或 Standup, please. 请站起来。 Pleasehavearest. 或 Havearest, please. 请休息一下。,2) 祈使句的否定结构，一律在肯

5、定结构前加Donot(Dont)。例如： Dontgothere, please. 请别去那儿。 Dontbelateforclass! 上课别迟到！ Dontlethimin.不要让他进来。,How to make cards,1. _out pieces of card with a pair of scissors.,2. _some words or sentences on each card.,Cut,Write,How to make cards,3. _ a picture about the words on the other side of the card.,4. _

6、at the picture and _ to say what is on the other side.,Dont _ up. _ trying and you will find you remember things better.,Draw,Look,try,give,Keep,Grammar 2,should & had better,1. Please know a little about DIY.,You should know a little about DIY.,We use should and had better when giving advice and te

7、lling 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 right thing to do.,You had

8、 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 blue.,You should not/shoul

9、dnt 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.,当我们给他人提建议时，可以用had better和should，表示“最好”或“应该”做某事， had better的语气比should强一些。 You had better refrigerate the beer before d

10、rinking it. 喝啤酒前你最好先把它冷冻一下。 You should exercise more. 你应该多锻炼。,had better (常简略为d better)，是一固定词组，后面必须跟动词原形，没有人称和数的变化。构成：had better do sth. 句型。 Youd better go to hospital at once. 你最好立即去医院看病。 Tom, youd better go there today. 汤姆，你最好今天去那儿。 had better 的否定式是将not直接放在had better的后面。 You had better not miss th

11、e last bus. 你最好不要错过末班公共汽车。,should 后面也要跟动词原形，且没有人称和数的变化。 You should stop smoking. 你应该戒烟。 should 的否定式是should not/shouldnt。 You shouldnt drink and drive. 你不应该喝酒后开车。,DIY advice,Read the advice and make sentences with should (not) or had better (not).,buy some to learn more about it,You should buy some t

12、o 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 better join a DIY club to learn more about it.

13、,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 advice and make sentences with should (not) or ha

14、d 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,You should be patient.,You had better be pat

15、ient.,1. 当我们向他人发出命令、提出要求或建 议时，常使用祈使句。其主语通常不明 确表示出来。其否定形式是在动词原形 前加do not/dont。为了表示客气和礼 貌，可以加上please。 2. 当我们给他人提建议时，可以用had better和should，表示“最好”或“应该”做 某事。否定形式是had better not和 should not/shouldnt。,Reflection,I. 单项选择。,1. The TV is too loud. Please _. A. turn it down B. to turn it down C. turn down it D.

16、to turn down it2. _ late again, Bill!A. Dont to be B. Dont be C. Not be D. Be not,3. _ cross the road until the traffic lights turn green. A. Not B. Wont C. Doesnt D.Dont4. _ me the truth, or Ill be angry.A. Telling B. To tell C. Told D. Tell,II. 句型转换。,1. Will you please read it again more slowly? (改为祈使句)_ again more slowly, please.2. If you dont listen to me, Ill go. (改为同义句) _ me, or Ill go.3. The teachers often tell the students not to be careless.(改为祈使句)_ careless, please.4. Please sit next to Nancy.(改为否定句)_ next to Nancy.,Read it,Listen to,Dont be,Dont sit,III. 完成句子。,1. 你应该在南京换火车。