Unit 2 Topic 3 Section A 课件 2023-2024学年仁爱科普版八年级英语上册

Unit 2 Keeping Healthy Topic 3 Section A 学习目标 预习检测 知识梳理 课堂总结 学习 导航 重点探究 当堂检测 新课导入 What should we do to prevent flu? What are the symptoms of the flu? 能用first, second, third, finally等连词有条理地描述事情 1 2 3 能用must，had better，should等情态动词向别人提出建议或劝告 能学习预防流感的方法 学习目标 学习目标 学习目标 学习目标 学习目标 1.You _______ watch TV for a long time, because it is bad for your eyes. A.had better B.had better not C.should D.have to 2.—______I stay at home all the time? —No, you don’t have to. You can play sports at first. A.Can B.May C.Must D.Need3.—You don’t have to stay in bed. Take exercise often, and you’ll feel better. —Thank you. I’ll _____ your advice. A.take B.give C.make D.hear B C A 预习检测 4.—Mr. Wang often goes climbing when he is free. —That’s right. Climbing hills can ______. A.cheer him up B.grow him up C.stand him up D.build him up5.—May I ask you some English questions, Jenny? —Sure, _______. A.go ahead B.go awayC.come on D.go over D A 知识梳理 What should we do to prevent the flu? 预防 exercise often What should we do to prevent the flu? keep the air fresh What should we do to prevent the flu? keep away from crowded places What should we do to prevent the flu? change clothes often What should we do to prevent the flu? keep our rooms clean 1. 含有must的一般疑问句，肯定回答用must，否定回答不能用mustn’t，而用needn’t或don’t have to。用don’t have to回答时，有人称和数的变化。e.g.: —Must we go there at six? —Yes, you must./ No, you needn't/ don't have to. —我们必须六点去那里吗？ —是的，必须。/ 不，你不必。 【辨析】must和have to两者都是“必须”的意思 must侧重于个人意志和主观上的必须，have to侧重于客观上的必要； must可用来表示现在和将来的“必须”，无时态变化，have to则可用于各种时态。e.g.: I know I must study hard. 我知道我必须努力学习。My grandma was ill, so I have to call the doctor in the middle of the night.我奶奶病了，所以我不得不半夜里把医生请过来。 采访医生怎样预防流感 1a Listen, read and say (Kangkang's father,Dr.Li,is talking with a journalist on TV) Journalist:May I sak you some questions,Dr.Li