8A Unit 4 Grammar班级 姓名 学号 等第 【学习目标】（Learning aims）1. 学会运用祈使句表示指令2. 学会用should和had better 来提出建议【重点、难点】（key points and difficulty）祈使句的用法【学法指导】（methods and skills ）1. 自学指导：回顾总结祈使句的用法和句型。2. 课堂上通过小组或同桌合作来解决问题，教师点拨。【学习过程】A. 课前预习：1. 给出指令 _ 2. 告诉人们做什么_3. 墙上挂幅画 _ 4.把强漆成蓝色_5. 用一把剪刀_ 6. 在每个卡片上 _7. 在卡片的另一边_ 8. 对DIY了解一点_9. 参加一个DIY俱乐部_10. 如此多的书_B. 课堂探究祈使句指的是表示命令、请求、建议或劝告的句子。其主语you常省略，谓语动词用原形，句末用感叹号或句号，读降调。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! = 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。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。（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。3.祈使句的反意疑问句(1)肯定祈使句的反意疑问句反问部分用will you或wont you。Please open the door, will/ wont you?请把门打开，好吗？(2)否定祈使句的反意疑问句反问部分只用will you。Dont be late again, will you?别再迟到了，行不行？(3)以lets开头的祈使句反意疑问句反问部分用shall we。Lets turn on the TV, shall we?我们把电视打开，好吗？had better 的基本用法特点其意为“最好”、“应该”，后接动词原形，与情态动词should用法相似，其中的had通常缩略为d：Youd better get some sleep你最好去睡一会儿。构成否定式时，通常将not置于had better之后(而不是had之后)；而构成疑问式时，则通常将had(而不是had better)置于主语之前：Id better not disturb him我最好别去打扰他。What had we better do?我们最好怎么办?C、课堂巩固一、根据句意和中文提示完成单词。（ ）1. The TV is too loud，I cant sleep. Please _.A. turn it down B. to turn it down C. turn down it D. to turn down it（ ）2. _ 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.Dont（ ）4. Please help me carry it, _?A. will I B. will you C. shall I D. shall we（ ）5. Dont make so much noise, _?A. will you B. wont you C. shall we D.do you（ ）6. Do you know the girl _under the tree?A. stand B. to stand C. standing D. stood（ ）7. Kate, _ your homework here tomorrow.A. bring B. brings C. to bring D. bringing（ ）8. _ me the truth, or Ill be angry.A. Telling B. To tell C. Told D. Tell（ ）9. Ive kept the dog _Maomao for a long time. A. Name B. named C. naming D. to name（ ）10. Dont you know that _ is good for our health?A. swim B. swimming C. swam D. swims（ ）14.Letsdoitatonce,_?Ashallwe Bwillyou Cdowe Ddoyou（ ）15.Letusdoitatonce,_?Ashallwe Bwillyou Cdowe Ddoyou二、词形变换1.You can park your car in the _ (广场).2.Yang Zhenning is one of _ (famous) scientists in China.3.He with his sister usually_(不同意) with each other.4.A lot of _ (read) like these _ (杂志)5.Peter is _(heavy ) of the two boys.6.If something _(worry) me, Ill go to my best friends.7.The man put on his hat and _(go ) away.8._(walk) your dog once a day is good for its heath.9.Would you please _ (not open) the door? Its so cold.10“Stop _(交谈) ,class begins now,” The teacher says.11.Look, who _ (read) books under the tree. Oh, its my friend Jim.12. How do you like our _ (colour) school life? -Very much.G、课后拓展一、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. Lets watch the sports games.（改为反意疑问句）Lets watch the sports games, _ _?4. The teachers often tell the students not to be careless.（改为祈使句）_ _careless, please.5. Please sit next to Nancy.（改为否定句）_ _ next to Nancy.6. Dont forget to turn off the lights, please.（改为反意疑问句）Dont forget to turn off the lights, _ _?7. If you move, youll die.（改为同义句）_ _, or youll die.8. Come to my house tomorrow.（改为反意疑问句）Come to my house tomorrow, _ _?9.JohncanhardlyunderstandRussian.(反意疑问句)JohncanhardlyunderstandRussian,_?10.TomdidntwatchTVthatevening.Helistenedtomusic.