Unit 2 No Rules,No Order Section A Grammar Focus课件 2025-2026学年人教版七年级英语下册

Unit 2 No Rules No Order Section A Grammar Focus queue jump the queue wait for just leave absent be absent from shh quietly belt feed noise n. 队 插队 等待 adv.只是；正好 v. 离开；留下 adj.缺席的：不在的 缺席不在 interj 嘘(用以让别人安静下来) adv.轻声地：安静地 n. 安全带；腰带；皮带 v. 喂养；饲养 n.声音；噪声 Words & Expressions 提升英语综合素养需要科学策略，最佳实践是，读儿童文学能有效克服畏难情绪。初中英语学习，跟读新闻广播能有效提升交际能力。多年经验表明，创建情景对话能有效培养耐心。教师普遍建议，每日晨读15分钟能有效增强表达自信。更有效的是，将学习融入日常生活场景。课堂观察发现，进行速读训练能有效增强动机。进阶策略，寻找学习伙伴互相激励。持之以恒地实践这些方法定能取得显著进步。深层次看，向优秀学习者取经。 Presentation 3a 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. 祈使句一般用来表示请求、命令、劝说、号召、警告等。祈使句的主语一般是第二人称you, 但往往省略。祈使句的肯定式以动词原形开头，否定式在动词原形前加 don't 。 Just go along this street and turn left. Be careful when you cross the street. Don't be late for class. Don't cheat in the exam. 为表示礼貌，祈使句经常在句首或句末加please。句末用please 时，前面通常加逗号。 Please write and tell me about yourself. Come in,please. 祈使句 以let开头的句子也是祈使句的一种结构，常用于第一人称和第三人称，表示建议、 邀请和劝说等。 Let me tell you the way to my house. Let's see the lions. Let him come in. Let them play basketball with us. 祈使句 提升英语综合素养需要科学策略，最佳实践是，读儿童文学能有效克服畏难情绪。初中英语学习，跟读新闻广播能有效提升交际能力。多年经验表明，创建情景对话能有效培养耐心。教师普遍建议，每日晨读15分钟能有效增强表达自信。更有效的是，将学习融入日常生活场景。课堂观察发现，进行速读训练能有效增强动机。进阶策略，寻找学习伙伴互相激励。持之以恒地实践这些方法定能取得显著进步。深层次看，向优秀学习者取经。 情态动词表示说话人的语气和情态，不能独立作谓语，只能和主要动词一起构成谓语。常见的情态动词有can、may、could、must、have to、should、would等，其后动词使用原形。情态动词一般没有人称和数的变化，它的否定式一般是在其后加not构成，在一般疑问句中通常将其提到句首。 情态动词 Sb. have/has to + V原+sth. He has to wear a uniform at school. We have to be quiet in the library. 陈述句规则： 情态动词 “have to” 有人称、数和时态的变化 have to-has to has to What does she have to wear? She has to wear school uniform. Does she have to wear a red scarf? No, she doesn’t. She doesn't have to wear a red scarf. （否定回答） （否定句） （一般疑问句） 情态动词 “have to”句型结构 have to 1.(肯定句） He/She/It+_______+______ 2.(否定句） He/She/It+____________+_______ 3.(一般疑问句） ______+ he/she/it +______+V原+...? Yes, he/she/it +_______. No, he/she/it +_______. has to 动词原型 动词原型 doesn't have to Does does doesn't have to 情态动词 “have to”句型结构 What do you have to do? We have to do morning exercises. Do you have to do morning exercises every school day? No, we don’t. We don't have to do it on Monday. （否定回答） （否定句） （一般疑问句） 情态动词 “have to”句型结构 have to 1.(肯定句） I/We/They+_______+______ 2(否定句） I/We/You/They+_________+_______ 3(一般疑问句） ______+I/we/you/they+______+...? Yes, I/we/you/they +_______. No, I/we/you/they +_______. have to 动词原型 动词原型 don't have to Do do don't have to 情态动词 “have to”句型结构 (1) have to 表示受到外在因素的压迫甚至威胁，内心 不情愿做某事，但又“不得不”去做某事 eg：I _______________________ ( 呆在家里）because it’s raining all day. (2) must表示个人主观上认为“必须”做某事 eg：From now on, I ____________________ （努力学习）. I hope I can be a great man like Mr. Zhong Nanshan when I grow up. have to stay at home must study hard 情态动词 “have to”和must 的区别 (3) must 无人称和数的变化 (4) have to 有人称，数和时态的变化 eg: Wu Zihang has to cook for himself every day. (改为一般疑问句) --- ________Wu Zihang ____ ____ cook for himself every day? --- Yes,______________. /No, ______________. Does have to he does he doesn't 情态动词 “have to”和must 的区别 Be 型祈使句 祈使句 Imperative Sentences Be careful. 肯定句 _____ +形容词 / 名词短语（+ 其他）. Don’t be late for class. 否定句 ________ +形容词 / 名词短语（+ 其他）. Be Don’t be Let 型祈使句 祈使句 Imperative Sentences Let him come in. 肯定句 Let + 宾语 + _________ （+ 其他）. 动词原形 Don't let her go. 否定句 _______ let + 宾语+ 动词原形+（+ 其他）. Don’t No 型祈使句 祈使句 Imperative Sentences No smoking. No + _______ / n. （通常表示“禁止……”，用于指示牌、布告等） doing No swimming in the lake. 1 情态动词除了have to之外，其余没有人称和数的变化 2 情态动词不能单独作谓语，后跟动词原形 特点 情态动词 Modal Verbs Modal Verbs 情态动词 1. We must respect the elderly. 2. We have to wear uniforms at school. must 表达说话者主观的看法，常用于表达个人的决心、义务感或内在的驱动力。 have to 强调由于客观需要，导致不得不做某事，并非完全出于个人意愿。 例句 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. Read the sentences. Do the verbs in bold need to change forms? Why? 3a What do they have in common? can, must, have to 后都是加动词原形 Complete the sentences using can, have to / must, or can’t / mustn’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 20 3c Look at the first sign and read the rules. Then write the rules for the other signs. 21 Work in pairs. Choose a sign from 3c. Guess where you can see the sign and then make a conversation with your partner. A: The picture is so beautiful! I want to take a photo for it. B: No, you can’t. Look at the sign! A: What does it mean? B: It means “No photos!”. A: Oh, I know. Example: In a museum … 22 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. 3d In library, we must keep quiet. We mustn’t make noise. We can’t ... library school dining hall park cinema hospital 23 Phrases jump the queue be absent from class feed the dog 功能 基本用法 情态动词 can Grammar Focus have to 与 must 功能 用法区别 功能 基本结构 祈使句 What rules do we follow at the museum? Make a conversation with your partner. $