Unit2 Keeping healthy Topic 3 Must we exercise to prevent the flu? Section A课件 2024-2025学年仁爱科普版八年级英语上册

Unit2 Keeping healthy Topic 3 Must we exercise to prevent the flu? Section A Language goals By the end of the class, you will be able to 1.Master the following words ,phrases and sentences: Words & phrases: a sore throat , Internet, crowed, prevent, journalist, question, go ahead, build sb. up, all the time Sentences： ①First…Second… Third… Finally… ②---Must we…? -- Yes, we must./No, we needn’t /We don’t have to. 2. Learn the symptoms（症状）of the flu. 3. Learn to give advice on how to fight(对抗) the flu. 4. Learn to give advice on how to prevent the flu. 5. Learn to use the sentence pattern about must. 洗淋浴 帮助某人放松 事实上 超过，大于 少于；不到 对……有益/有害 危害/伤害某人 不但A而且B 二手烟 使用A去做B 尽可能……的/地 过着健康幸福的生活 有危险，处于危险之中 冒着……的风险 冒险做…… take a shower =take showers help sb. relax in fact = as a matter of fact over +数词 = more than +数词 less than +数词 be good/bad for harm sb. = be harmful to...= do harm to = be bad for both A and B =not onlyA but also B second- hand smoke use sth. for doing sth. = use sth. to do sth. as+adj/adv as possible = =as adj./adv. as sb. can live a healthy and happy life at risk at the risk of ... take the risk of doing ... = risk sth./doing sth Revision in class Revision 1.can （1）表示能力时，意为“能够，会”，could是can的过去式，意为“能；会”，表示过去的能力。 eg. —Can you play the piano?你会弹钢琴吗？ —No，I can't.不，我不会。 （2）表示允许、请求时，could比can 语气更加委婉客气，常用于“Could I / you …?”句型中，若表示同意时，用can回答而不用could。 eg. — Could I use your pen?我可以用你的钢笔吗? — Yes, you can.可以。 （3）can’t意为“不能，不会”，也可用于表示推测，意为“不可能”。 eg. Mr Smith can't be at home.史密斯先生不可能在家。 2. may (1) 表示允许、请求时用法与can相似。在回答以may引起的问句时，肯定回答一般不用may这个词，而用其他方式，如“Yes, please.”或“Certainly.”，否定回答用can’t或mustn’t, 不能用may not。 如：—May I come in？我可以进来吗？ —Sure.当然(可以)。 Revision (2) 表示推测，意为“可能，也许”，常用于肯定句中,可能性较小。 eg：The watch may be Mary's. 这块手表可能是玛丽的。 3. must (1) 表示义务，意为“必须”（主观意志）；否定形式 mustn’t, 意为“禁止，不允许”“一定不要；千万别”。 在回答以must引起的问句时，肯定回答用must，否定回答用needn’t或don’t have to eg. —Must I go now？我现在必须去吗？—Yes，you must.是的，你必须去。 —No，you needn't./No，you don't have to.不，你不必 You mustn't play football on the road.你不许在公路上踢足球。 （2）must和must be 都表示揣测，意为“想必，准是，一定”，只用于肯定句中, 可能性较大。 eg. The book must be Lily's because there's her name on the cover. ▲have to do sth. 不得不/必须做某事，表示迫于外界压力或客观条件而不得不做某事 must do sth. 必须做某事, 表示主观愿望必须做某事 Practice Complete the sentences. Li Yuan was born in America. She _______ speak English very well. Cars, buses and bikes _________ stop when the traffic lights are red. You ________ play with the knife, or you________ hurt yourself. That schoolbag ________be Jim’s . His is in the desk. The book _________ be Gina’s . Look! Her name is on it. _______ you play the piano? Of course. I’m good at it. The children all like this movie. It _______ be very interesting. Are you coming to Jenny’s party? I’m not sure. I _______ go to the park with my brother. My parents are away. I _______ look after my sister at home. can must mustn’t must Can must must may may can’t 1b. Listen to 1a and check Dr. Li’s advice.  1.exercise often  2.keep the air fresh  3.go to bed early  4.wash hands and change clothes often √ √ √  5.keep our rooms clean  6.drink enough water  7.take some medicine  8.keep away from crowded places √ √ 1c. Listen again and use the correct phrases in 1b to retell Dr. Li’s advice with first, second, third and finally. First, ________________________________________________ Second, ____________________________________________ Third, _______________________________________________ Finally, ______________________________________________ we should exercise often to build us up. we should keep our rooms clean and the air fresh all the time. we should wash our hands and change our clothes often. we should keep away from crowded places. Example: A: Must we do exercise to prevent the flu? B: Yes, we must. A: Must we take some medicine to prevent the flu? B: No, we don’t have to. / No, we needn’t. Pair work 1d Make conversations similar to 1a, using the information in 1b. Language Points 1. go ahead 请开始，开始做（表同意或允许） eg. — May I use your bike?  — Yes, go ahead.  2. prevent 防止、预防 prevent the flu/illnesses 预防流感/疾病 prevent/stop /keep ..from doing sth. 防止／阻挠...做某事 eg. Lucy's parents tried to prevent/stop /keep her from playing computer games. We must prevent/stop /keep Japanese from pouring waste water. 3. build v. (built) 修建，建造，增强 n. building 建筑物 build a house 建造一座房子 build sb. up = make sb. strong 增强…的体质 Language Points eg. You need to do more exercise to build yourself up. 4. all the time 一直 5. finally= in the end=at last 最后，最终 6. keep away from sb./sth./doing sth.=stay away from sb./sth./doing sth. 远离..... e.g. As students, we should keep/stay away from smoking and drinking. keep...away from... 让...远离... e.g. You'd better keep the child away from the flu. 7. first, ... Second, ... Third, ... Finally, ...这是一般来说用于介绍步骤或者表达观点的词,可运用于作文中 8. crowded adj. 拥挤的 crowded places 拥挤的地方 keep away from crowded places 9. have the flu 患流感 Language Points 10. must (1) 表示义务，意为“必须”（主观意志）；否定形式 mustn’t, 意为“禁止，不允许”“一定不要；千万别”。 在回答以must引起的问句时，肯定回答用must，否定回答用needn’t或don’t have to eg. —Must I go now？我现在必须去吗？—Yes，you must.是的，你必须去。 —No，you needn't./No，you don't have to.不，你不必 eg. You mustn't play football on the road.你不许在公路上踢足球。 （2）must和must be 都表示揣测，意为“想必，准是，一定”，只用于肯定句中, 可能性较大。 eg. The book must be Lily's because there's her name on the cover. ▲have to do sth. 不得不/必须做某事，表示迫于外界压力或客观条件而不得不做某事, 可用于各种时态. must do sth. 必须做某事, 表示主观愿望必须做某事, 无时态变化. eg. Language Points eg. I know I must study hard. My grandma was ill, so I have to call the doctor in the middle of the night. 11. on the Internet 在网上 12. sore adj. 疼痛的，酸痛的 have a sore + 部位 eg. have a sore throat 喉咙痛 have sore eyes 眼睛痛 13. take/follow one’s advice/suggestions. 采纳某人的建议 2. A. Listen to the passage and circle the symptoms that you hear. fever cough headache backache toothache stomachache sore throat sore eyes B. Listen again and check the advice you hear. Should drink lots of boiled water take some cold pills lie down and take a good rest brush your teeth twice a day Shouldn’t work on the Internet too long go to crowded places play sports too much eat hot food √ √ √ √ 3. Look at the pictures and write down the advice on how to prevent the flu, using should, had better or must. 1. 2. We should exercise often to build us up. We must go to see a doctor at once when we have the flu. 3. 4. We had better keep away from crowded places to prevent the flu. We should take showers often to keep our bodies clean. 5. 6. We should open the window all the time to keep the air fresh. We should change our clothes often to keep healthy. 增强...的体质 阻止，预防 ... 做某事 保持...... 远离... 离...远 听从...的建议 最后 勤换衣服 运动过量 拥挤的地方 一直 和…谈话 请开始，开始做（表同意或允许） 喉咙痛 在网上 保持空气清新 build sb.up prevent ...from doing = stop ... from doing = keep ... from doing keep sth/sb + adj. keep away from be far away from take/ follow one’s advice finally = at last =in the end change clothes often do sports too much crowded places all the time talk with/to sb. go ahead have a sore throat on the Internet keep the air fresh Exercise in class 1. --- Excuse me, Mr. Jones. Could I take a photo with you? --- Sure, ______. A. go ahead B. look out C. go away D. shut up 2. All the drivers drive carefully to prevent the traffic accident ________.  A. happen             B. to happen            C. on happened   D. from happening 3. My parents ask me__________in order to make me healthy. A.build up me B. build me up C. to build up me D. to build me up 4.— Must I take part in the activity? — No, you________. You’re too young. A.mustn’t B.don’t C.don’t have to D.don’t need 5. Mr Lee always gave me some ________ on how to study English well when I had some trouble. A．advice B．question C．suggestion D．problem 6. — Jane, can you come to my birthday party this Saturday? — Sorry, I can’t. I ________ look after my little sister while my parents are away. A．must B．mustn’t C．have to D．don’t have to 7. Tom didn’t go to school because he had ________ flu yesterdy. A.a B. an C. the D. 不填 8. We must keep our classroom ____________. A.cleaning B. clean C. to clean D. cleaned 9. This is a difficult __________. I can’t answer it.. A.problem B.question C.hope D. advice 10. It’s good for your health to _________ from smoking and drinking A.far away B.put away C.keep away D. go away A D D C A C C B B C 1. We should drink lots of _____________(boil) water when we have a fever. 2. Children mustn’t go to the _____________(crowd) places. Maybe it’s dangerous. 3. _____________(final), the lost boy found his father. 4. Last year they ______________(build) a tall building. 5. Could you give me some _____________(suggest) on how to learn English well? 6. We must do more exercise ______________(keep) away from illness boiled crowded Finally built suggestions to keep We learn: 1. To master Some new words and useful expressions: 1. New words: question, build, finally, Internet, journalist, ahead, prevent, sore, crowded, throat New phrases: keep away from, take some cold pills, change our clothes often, go to crowded places, keep the air fresh, take one’s advice, on the Internet 2. first, second, third, finally We can: 1. Use must / had better / should to give advice about how to prevent the flu. 2. Be able to ask and answer in“must”questions correctly Summary Homework 1. Read 1aaloud and fluently and finish the workbook. ( Levels A, B & C) 2. Sort all the advice to keep healthy, which we learned. ( Levels A & B ) 3. Search some advice on how to prevent the covid-19. (Level A) 4. Optional: Read the passage and take notes. 5. Preview Section B Other 52505.38 Other 53497.98 Other 50911.992 $$