Unit 4 Don’t eat in class. Section B(1a—1d) 课件 2023-2024学年人教版七年级英语下册

Unit 4 Don’t eat in class. Section B(1a—1d) 1 Review What are the rules at your school ? 1. Don’t arrive late for class . 2. Don’t run in the hallways . 3. Don’t eat in the classroom . 4. Don’t listen to music in the classroom or the hallways . 5. Don’t fight . Learning objectives To learn to use model verbs have to , must . To learn to talk about rules at home. must 的用法 主观看法 有必要或有义务去做某事 只有现在时一种时态 We must be patient. 我们必须耐心点。 must 的用法 否定式 mustn’t 不准，禁止 You mustn’t smoke in the office. 你不能在办公室里抽烟。 must 的用法 疑问句 肯定回答 否定回答 must needn’t 不必 Mustn’t I finish my homework before eight o’ clock ? Yes , you must . 是的，你必须完成。 No , you needn’t . 不，你不需要。 我必须八点之前完成我的作业吗？ have to 的用法 客观需要 不得不 被迫 You have to go to the hospital . 你不得不去医院。 人称 时态 She has to go to school from Monday to Friday . 她周一到周五都得上学。 He had to look after his sister yesterday . 他昨天不得不照顾他的妹妹。 否定式 don’t have to 不必（=needn’t） You don’t have to finish your homework tonight . 你不必今晚完成你的作业。 Listen and put an X for things Dave can't do and a √ for things he has to do. Rules Can’t (ᵡ) Have to/Must (√) When go out see friends do his homework practice the guitar do the dishes watch TV help his mom make breakfast clean his room 1b a h c e b g d f ᵡ ᵡ ᵡ √ √ √ √ √ Listen again . Write when Dave has to follow the rules in the chart in 1b . Choose from the phrases in the box . 1c on school nights every Saturday before dinner in the evening on school days after dinner after school every morning Rules Can’t (ᵡ) Have to/Must (√) When a go out ᵡ h see friends ᵡ c do his homework √ e practice the guitar √ b do the dishes √ g watch TV ᵡ d help his mom make breakfast √ f clean his room √ on school nights on school day after school before dinner after dinner in the evening every morning every Saturday Girl :Hi, Dave. Do you want to watch the basketball game in the park this evening? Dave :I'd love to, but I can't go out on school nights. Girl :Oh, that's too bad. Dave :Yeah, I have so