Unit 4 Section A 1a -2d 课件 2023-2024学年人教版英语七年级下册

Unit 4 Don’t eat in class. Section A 1a-2d run in the hallways A: Can we run in the hallways? B: No,we can’t. We can’t run in the hallways. run in the playground B: But we can run in the playground. We must/have to run in the playground. Don’t run in the hallways. be/arrive late for class A: _we arrive/be late for class? B: No,we _. We _ arrive/be late for class. be on time for class We be on time for class. arrive/be late for class. . must/have to Don’t Can can’t can’t eat in the classroom B: No,we_ . We _ eat in the classroom. eat in the dinning hall B: But we _ eat in the dinning hall. We eat in the dinning hall. eat in the classroom. A: Can we _ in the classroom Don’t must/have to eat can’t can’t can 观察并探究(一) A: Can we run in the hallways? B: No,we can’t. We can’t run in the hallways. But we can run in the playground. 情态动词 Can 本单元情态动词can, can't用来谈论_,can表示_, can't表示_; 通过观察,可以看出情态动词can/can't后接_; 规章制度 许可 禁止 动词原形 She _ wear the school uniform at school. She _ wear the school uniform at school. She _wear the school uniform outside. Does she _ wear the school uniform everyday? No, she _. wear the school uniform must has to doesn't have to have to doesn't doesn't have to She _ wear the school uniform everyday. She _wear the school uniform outside. doesn't need to needn't mustn't 不准,禁止 观察并探究(三) 情态动词 must/have to 1.通过观察,我们可以发现_没有人称和数的变化,而_ 则有人称及数的变化 must have to 观察一 2.通过观察,我们可以发现must的否定式为_,而have to 的否定式为_或者_,其中_ 表示不准;禁止;而_ 表示“不必”相当于_ 观察二 mustn't don't have to doesn't have to mustn't don't /doesn't have to don't need to/needn't I must go now, or I will be late. 我必须现在就走,否则我就迟到了。 It's too late. I have to take a taxi. 太晚了,我不得不乘出租车。 3.通过观察,我们可以发现二者均表示必须,_,更强调说话者的主观意愿,而_ 强调客观上的必要性,意为_ 。 must have to 不得不 观察三 活学活用 ( )(1)—Dad, why should I stop playing computer games? —For your health, my boy, I'm afraid you _. A. must B. have to C. can D. may 观察并探究(三) Imperative sentence:(祈使句) 1. 祈使句一般用于_,长辈对晚辈之间,表示_、劝说或警告,也可表示请求; 3. 祈使句的否定句在_前加_,表示“不要做某事”,本单元否定祈使句用于陈述_ 。 Listen to me carefully