Section A,Unit 2 Keeping Healthy,Topic 3 Must we exercise to prevent the flu?,illnesses,感冒,发烧,咳嗽,头痛,牙痛,背痛,胃痛,have a cold,have a fever,have a cough,have a headache,have a toothache,have a backache,have a stomachache,Review,流感,have the flu,What should we do to prevent the illnesses?,We should do exercise to build us up.,Ask and answer,预防,使身体强壮,What should we do to prevent the illnesses?,We had better eat more fruit and vegetables.,Ask and answer,What should we do to prevent the illnesses?,Ask and answer,We shouldnt spit everywhere.,What should we do to prevent the illnesses?,We must keep our rooms clean and the air fresh.,Ask and answer,We mustnt keep fingernails long.,What should we do to prevent the illnesses?,Ask and answer,Flu is a serious illness, what should we do to prevent it？ Listen to 1a and check Dr. Lis advice.,录音1a-P43, 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,Watch the flash and write down Dr. Lis advice.,视频1a-P43,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.,Key points,Must we go to see a doctor at once when we have the flu ? 肯定回答： Yes, we must. 否定回答： No, we neednt. / No, we dont have to. 注：此处不能用 mustnt (禁止；不准)回答 Eg: Must I finish my homework now ? No, you neednt. / No，you dont have to.,Make similar conversations after the example.,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 dont have to. / No, we neednt.,Pair work,2. A. Listen to the passage and circle the symptoms that you hear.,fever cough,headache backache,toothache stomachache,sore throat sore eyes,录音2-A-P44,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,Shouldnt,work on the Internet too long go to crowded places play sports too much eat hot food,录音2-B-P44,3. 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.,We must go to see a doctor at once when we have the flu.,3.,4.,We had better keep away from crowded places.,We should take a shower often.,5.,6.,We should keep the air fresh.,We should change our clothes often.,Drink a lot of water.,Wash hands often.,Give more advice to prevent the flu,Eat healthy food.,Dont go to crowded places.,Do more exercise.,Open the windows.,选择方框中的句子完成对话，其中有两项多余。 A: You look pale, Dr. Li. _ B: I only feel a little tired. A: It looks more serious than being tired. _ B: No, thanks. Nothing serious, I think. A: _ But you have worked for thirty-six hours without having a rest. B: Im a doctor. _ A: _,F,G,B,D,C,Exercises,summary,1.We know how to prevent the flu. 2.We can use must/had better/ should to give advice.,Homework,写一篇小短文来说明如何预防流感。 背诵1a。,Thank you !,