Unit4 Grammar 祈使句课件2025-2026学年译林版（2024）八年级英语上册

该初中英语课件聚焦祈使句及should/had better的用法，通过“I say, you do.”互动指令和组装书架情境对话导入，从定义、结构（肯定/否定）到生活应用（如禁止标语）逐步递进，结合对比练习搭建学习支架，帮助学生系统掌握语法知识。 其亮点在于情境化与任务型教学结合，通过DIY对话、制作闪卡等真实场景提升语言运用能力，对比祈使句与动名词作主语培养辨析思维，练习设计循序渐进助力自主学习。学生能联系生活实际提升应用能力，教师可借助现成互动活动和分层练习提高教学效率。

Unit4 hands-on fun Grammar 1. Stand up. 2. Sit down. 3. Put up your hands . 4. Touch your nose. I say, you do. Grammar A Imperative sentences 什么是祈使句？ 表示请求、命令、劝说、警告等句子。主语往往被省略 ，句末通常是"."或"!" Turn left. No parking! No smoking! No fishing! Don’t turn right! Don’t park your car! 生活中的指示 5 Turn left! Don’t pick the flowers! Turn right! Don’t smoke! Let me help you. Don’t be late again! Be quiet, please. Don’t park your car! Please go upstairs! Please don’t eat! We use these sentences to give orders or instructions . 命令 指示 When do we use these sentences? 6 What are Millie and Andy doing? They are putting together a shelf. 建议 请求 命令(指示) 我们用祈使句来表达建议、请求和命令。 祈使句的结构有哪些？ Turn left! Don’t pick the flowers! Turn right! Don’t smoke! Let me help you. Don’t be late again! Be quiet, please. Don’t park your car! Please go upstairs! Please don’t eat! 祈使句的最常见结构如下： 　　　 Do sth. 　　　 Don’t do sth. 还有其他结构吗？ 类型 结构 例句 Do型 Be型 Let型 肯定结构 V原 Stand up! Be+adj./n. Be quiet, please. Tom, be a good boy! Let sb. do sth. Let’s go! Let me help you. more polite suggest doing sth. together 类型 结构 例句 Do型 Be型 Let型 否定结构 Don’t+V原 Don’t +be+adj./n. Don’t let sb. do sth. Let sb. not do sth. No+n./v-ing! Don’t stand up! Don’t be late! Let’s not say anything about it. Don’t let him go. No photos! No smoking! No型 don’t please let’s 我们用动词原形开启一个句子 告诉人们做什么 让命令/指示 更礼貌 建议一起做某事 Millie is teaching her classmates how to make flashcards. Cut Write Draw Look try don’t give Keep __________ out the coloured paper. __________ the scissors ready. __________ the paper in half. __________ not fold it too loosely. __________ the folded paper into petal(花瓣) shapes. __________ cut towards your fingers! __________ the petals with tape or glue. __________ put all pieces on the table first. A. Cut B. Fold C. Do D. Don’t E. Take F. Get G. Stick H. Let’s Take Get Fold Do Cut Don’t Stick Let’s 祈使句的回答 祈使句通常表示将来要发生的动作， 所以回答时，一般用will或won’t。 — Don’t forget to do your homework. — I won’t. — Remember to turn off the lights. — I will. 18 祈使句的反义疑问句 Let’s … , shall we? Let us/sb. … , will you? 肯定/否定祈使句(Do.../Don’t...), will you? Let’s go, Let the boy go first, Don’t smoke here, shall we? will you? will you? 19 在公共场合的提示语中，常用的结构 “No＋名词 / v -ing” ，表示“禁止做某事” No smoking! No photos! No parking! Tip: 1. Lucy (do) her homework by herself. 2. Lucy, (do) your homework by yourself. 3. Lucy, _________ (do) your homework by yourself is important. 4. ____________(pick) the apples and eat them. 5. ___________ (pick) the apples is great fun. 6. ____________(read) every day makes you smart. 7. ____________(read) the books and answer the questions. does do doing Pick Picking Reading Read 区分祈使句和动名词作主语 What other sentences can we use to give advice? Grammar B Using should and had better Suzy and her mum are trying to paint a bird house. should shouldn’t had better had better not What words can we use when giving advice? should had better should do sth. 应该做某事 should not do sth. 不应该做某事 had better do sth. 最好做某事 had better not do sth. 最好不要做某事 should和had better后都接动词原形 没有 耐心的 f You should buy some to learn more about it. b You should /had better join a DIY club to learn more about it. a You had better not begin your work without reading them. g You had better not play with them when you do DIY jobs. d You should be patient. e You had better be careful when you use it. c You should read them slowly and carefully. n.用法说明，操作指南 耗费时间 伤害你的皮肤 Practice 根据上下文补全建议 If you want to make a proper bookshelf, you ______________________ measure (测量) the wood carefully. should/had better 2. For a smooth paint job, you should/had better __________ (clean) the furniture (家具) . clean 3. When assembling(组装) the model, you _________________________ follow the steps. should/had better 4. Before fixing the tap, you ______________________ turn on the water. shouldn’t had better not Practice 根据上下文补全建议 Summary Using imperative sentences Using should and had better Instructions Advice 1. Let’s _________ a noise, someone is sleeping. A. not make B. no making C. not to make D. don’t make 2. ________ get off the bus before it stops. A. Don’t B. Doesn’t C. Didn’t D. Not 3. ________buy your ticket from a ticket machine. Because there’re many people there. A. Not B. Not to C. Don’t D. Don’t to 4.We___________think more of others if we want to get on well with them. A. should to B. had better to C. should D. shouldn’t 5. Amy, ________to smile when you are down, and you’ll soon be happy again. A. Trying B. To try C. Try D. Tried Practice 句子纠错 You should to study for the test. → _________________________ He had better not to play football in the street. → ______________ We should helping each other. → ___________________________ They had better studying hard. → __________________________ She should not to eat too much junk food. → _________________ 去掉 to 去掉 to helping → help studying → study 去掉 to Practice 1. Will you please read it again more slowly? (改为祈使句) 　_______ again more slowly, please. 2. If you don't listen to me, I'll go. (改为同义句) ________ me, or I'll 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  Don't be  Don't sit Practice 1. 你应该在南京换火车。 __________ change trains at Nanjing. 2. 你最好在下雨前回家。 ___________________ before the rain starts. 3. 现在你最好别打棒球了。 _____________________ baseball now. 4. 不要把金鱼放在阳光下。 _________ the goldfish in the sun. You should You'd better go home You had better not play Don’t put Practice Lavf57.62.100 $