Unit 2 课时3 Section A Grammar Focus（课件）英语新教材人教版七年级下册

该初中英语课件聚焦祈使句（Do型、Be型、Let型、No型）及情态动词can、must、have to的用法，通过歌曲《Let it go》歌词导入，提取祈使句和情态动词例句，搭建从语境感知到语法规则学习的支架，衔接后续系统讲解。 其亮点在于以情境任务驱动语言运用，如小组为图书馆、餐厅等场所制定规则并展示，提升语言能力与思维品质。梯度练习（单选、句子转换、实际规则制定）结合语言点解析，助力学生夯实基础，教师可借此高效落实语法教学与规则意识培养。

Don't let them, let them see. be the good girl, always have . to be, don't . let them . know. 天给你在let . IT go . to do away now。The going to could never Better me . anyway. Unit 2 No Rules, No Order Section A Grammar Focus 掌握核心词汇，能准确认读、理解含义并正确拼写。熟练掌握祈使句的四种类型，明确其肯定式、否定式结构及表达功能。理解情态动词 can、must、have to 的用法及区别。（学习理解） 能正确运用祈使句的不同类型完成句子填空、规则改写等练习，做到结构规范。能小组合作，为图书馆、餐厅等场所 brainstorm 规则，并用祈使句和目标情态动词进行书面记录和口头展示。能完成句型转换等练习，熟练运用语法知识解决具体问题。（实践运用） 能将所学语法知识迁移到不同生活场景，用英语制定、描述规则，提升语言运用的灵活性。树立规则意识和责任感。能主动观察身边的规则提示语，尝试用所学祈使句和情态动词进行仿写或翻译，培养用英语解决实际问题的能力。(迁移创新） 学习目标 01 02 03 04 05 06 07 08 Lead in Presentation Practice Production Summary Exercise Homework Language points Contents 01 Lead in Don't let them in, Don't let them see Be the good girl you always have to be Conceal, don't feel, Don't let them know Well, now they know Let it go, let it go Can't hold it back anymore Let it go, let it go Turn away and slam the door I don't care what they're going to say Let the storm rage on The cold never bothered me anyway Watch and sing Don't let them in, Don't let them see Don't let them know Turn away and slam the door Let it go, let it go Let it go, let it go Be the good girl you always have to be What kind of sentences are they? Do型 Be型 Let型 Watch and think 祈使句 (Imperative sentences) 02 Presentation Grammar Focus 祈使句 (Imperative sentences) 祈使句一般用来表示请求、命令、劝说、号召、警告等。在祈使句中，通常省略主语第二人称you。 Please pass me the pen. Close the window now. Be careful when you cross the street. Don’t play on the busy road. 表请求 表命令 表劝告 表警告 Grammar Focus Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. Can we bring our phones to class? No,we can’t. We must keep them in our lockers. Can we eat snacks in class? No, we can’t eat in class. We have to eat in the dining hall. 其肯定形式常以动词原形开头， 否定形式是在动词原形前加don’t。 为表示礼貌，可以在句首或句末加上please。 Find the Imperative sentences 祈使句分类 Do型 Be型 Let型 No型 Grammar Focus Don’t smoke here ! Don’t run in the hallway! 1. Do型祈使句 实义动词原形(+宾语)(+其他). Look! Listen! Sit down! Stand up! Open your book! Wear the school uniform! Don’t +实义动词原形(+宾语)(+其他). 否定句 动词原形 动词原形+副词 动词原形+宾语 Don’t be nervous! Don’t be late for class! 2. Be型祈使句 Be+表语(+其他). Be careful! Be polite and treat one another with respect. 否定句 Don’t+be+表语(+其他). Don’t+let+宾语+动词原形(+其他). 或Let +宾语+not+动词原形(+其他). 3. Let型祈使句 Let+宾语+动词原形(+其他). Don’t let them make any noise. Let’s not say anything about it ! 肯定句： 否定句： Let’s have a rest. 多为公共场合的提示语。 No smoking ! No photos ! Never give up！ 4. No+ 动词-ing/名词! Never +动词原形! 多用来加强语气。 Read the sentences. Do the verbs in bold need to change forms? Why? Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. Can we bring our phones to class? No,we can’t. We must keep them in our lockers. Can we eat snacks in class? No,we can’t eat in class. We have to eat in the dining hall. No, they don’t. Because the verbs appear in imperative sentences or after modal verbs. 2b Find the modal verbs! Grammar Focus Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. Can we bring our phones to class? No,we can’t. We must keep them in our lockers. Can we eat snacks in class? No, we can’t eat in class. We have to eat in the dining hall. 情态动词can、have to与must 情态动词用于表达说话人的态度、意愿、推测、建议、能力等。 它们通常没有人称和数的变化。 并且后面必须跟动词原形来构成完整的谓语。 情态动词can的用法 Grammar Focus 表示能力，意为“能，会”。 We can speak a little English. I can play badminton, but I can’t play volleyball. You can play basketball at the weekend. We can’t run in the hallways. 表示许可，意为“可以”。 —Can you help me with my Chinese? —Yes, I can. 表示请求，意为“可以”。 can的意思有 。 can的否定形式为 。意思为 。 can引导一般疑问句时，肯定回答 ， 否定回答 。 能，会/可以 can’t 不能/不可以 Yes, 主语+can No, 主语+can’t 情态动词must的用法 Grammar Focus 表一定，必须 We must be on time. She must do her homework tonight. You mustn’t eat in class. He mustn’t bring the phone to school. 表禁止 must的意思是 。 must的否定形式为 。意思为 。 Must是情态动词，没有 的变化 一定；必须 mustn’t 禁止 时态，人称和数 情态动词have to的用法 Grammar Focus 不得不 We have to clean our classroom every Friday. 否：We have to clean our classroom every Friday. He has to keep the phone in the locker. 否：He have to keep the phone in the locker. 不必 have to的意思是 。 have to有 的变化,三单形式是 。 过去式是 。 have to的否定形式为 。意思为 . 不得不 had to has to 时态，人称和数 don’t doesn’t don’t/doesn’t/didn’t have to 不必 例句 I don’t like English, but I learn it well because it’s important. I like English. I learn it well. 含义 人称变化 否定形式 客观条件、规则或他人要求导致的 说话人主观上的 have to must 有时态，人称和数变化 无有时态，人称和数变化 don’t/doesn’t have to 含义：不必 mustn’t 含义：禁止、不允许 情态动词have to和must的用法区分 Grammar Focus have to must “不得不” “必须、一定要” 03 Practice Practice 1. ——______ late for class next time. ——Sorry, I won’t. Don’t B. Don’t be C. Not be D. Isn’t 2 Please ______ your hands if you know the correct answer. raise B. raising C. raised D. to raise 3. ______ talk loudly in the library. It’s against the library rules. Not B. No C. Don’t D. Doesn’t 4. —______ you swim across the river? —No, I can’t. It’s too dangerous. A. Can B. Must C. Have to D. Should 5. My mother is ill, so I ______ stay at home and look after her today. A. can B. must C. have to D. might 6. —______ I use your dictionary for a minute? —Of course, you can. A. Must B. Have to C. Can D. Should 客观条件 1. Don’t jump the queue. You ___________ wait your turn. 2. I _____ feed my dog many kinds of food, but I ____give him chocolate. It is bad for him! 3. A: Can I leave the classroom if I don’t feel well? B: Yes, but you ___________ tell your teacher about it when you ______ be absent from class. Complete the sentences using can, have to / must, or can’t / mustn’t. have to / must can have to / must have to can’t 3b 4. A: Hey! Can I look at your book? B: Shh, we ___________ talk quietly in the library. 5. A: Can you put on your seat belt? We ___________ wear one when we’re in a car. B: Sure. Thanks! have to/must have to/must 插队 排队等候 n. 种类 对…有坏处； 缺席 adj+ly→adv. 穿；戴（强调动作） 反：be good for 穿；戴（强调状态） Look at the first sign and read the rules. Then write the rules for the other signs. Do not eat or drink. No eating or drinking. You can’t / mustn’t eat or drink. 3c Do型祈使句 No型祈使句 情态动词 Do not here. No . You can’t / mustn’t here. Do not here. No . You can’t / mustn’t . Look at the first sign and read the rules. Then write the rules for the other signs. 3c park parking park take photos photos take photos Do not here. No . You can’t / mustn’t here. Do not . No . You can’t / mustn’t . Look at the first sign and read the rules. Then write the rules for the other signs. 3c swim swimming swim feed birds feeding feed birds 04 Production In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean. library school dining hall park cinema hospital 3d Rules in . We mustn’t make noise. We must keep quiet. We can’t eat. library In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean. library school dining hall park cinema hospital 3d Rules in . school dining hall We mustn’t litter. Don’t litter. We must queue up. We have to clean up the tables. In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean. library school dining hall park cinema hospital 3d Rules in . park Don’t step on the grass. We mustn’t pick flowers. No camping. In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean. library school dining hall park cinema hospital 3d Rules in . cinema No pets allowed No smoking. No video recording. In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean. library school dining hall park cinema hospital 3d Rules in . hospital We mustn’t talk loudly. We must wash our hands. We mustn’t smoke. 05 Summary Summary Grammar 1. 祈使句的表达 2. 情态动词的用法 Key words turn, leave, absent, quietly Expressions jump the queue, wait for 06 Language points jump the queue / kjuː / 插队 相当于 jump the line / cut in line。 We shouldn’t jump the queue at any place. 在任何地方我们都不应该插队。 1. Don’t jump the queue.(教材P13 3b) 2. Can I leave the classroom if I don’t feel well? (教材P13 3b) leave / liːv / v. 离开；留下 (1) [及物动词] & [不及物动词] 离开 leave leave for + 某地（目的地） 动身前往某地 leave + 某地 离开某地 leave A（出发地）for B（目的地） 离开A 地前往B地 We leave the airport at 10:00 p.m. 我们晚上十点离开机场。 When will you leave for Beijing?你什么时候动身前往北京? Jim is leaving New York for Washington.吉姆要离开纽约前往华盛顿。 (2) [动词] 留下；忘了带 I left my bag in the car. 我把包落在车里了。 3. Yes, but you have to / must tell your teacher about it when you have to be absent from class. (教材P13 3b) absent / ˈæbsənt / adj. 缺席的；不在的 (1) 反义词为 present“出席的，在场的”。 (2) be absent from 缺席；不在 Tom was absent from classes yesterday because he caught a cold. 汤姆昨天没来上课,因为他感冒了。 【拓展】absence [名词] 缺席，不在 Will you please take care of my dog during my absence? 我不在时,请你帮我照顾一下我的狗好吗? 07 Exercise 一、单项选择 1. — Max, ______be afraid of speaking in front of people. You are the best! — OK, I won’t. A. doesn’t B. not C. isn’t D. don’t 2. — _______ I take photos here? — Sorry, you can’t. A. Must B. Need C. Can D. Will 3. Look! The sign on the wall says, “No _______!” A. smoke B. to smoke C. smoked D. smoking C D D 1. They can play the violin and the drums. （对画线部分提问） ________ __________ they _________? 2. You can go swimming with us this afternoon.（改为一般疑问句） _______ you _______ swimming with us this afternoon? 3. —Must I keep the window open all day? （作否定回答） —No, you ___________________. 4.We must keep quiet in the reading room.（改为一般疑问句） ________ we ________ quiet in the reading room? 5.—Can she bring her dictionary to class?（作肯定回答） —Yes, ________ ________. Can What can 二、根据要求完成句子 do go needn’t / don’t have to Must keep she can 08 Homework Homework Need to do: 将“She has to finish the task before 5 p.m.” 改为一般疑问句并作肯定回答。 Choose to do: 和家人用英语讨论 1 条家庭规则，记录 1 句核心表达。 把 “We can eat in the dining hall” 改为否定句和祈使句两种形式。 感 谢 观 看 $