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1、 Topic 2 I must ask him to give up smoking No.1 Junior High School Lu Hairong Unit 2 Keeping HealthySection BSection BEnjoy the song复习Learning Aimsl Master the use of“must”and“must not”.l Talking about the harm（伤害）（伤害）of smoking.lWe should keep away from smoking.Look at the pictures and make sentenc
2、es with“must”or“mustnt”.You must do morningexercises.Show yourselfdo morning exercisesYou must not throw litter around.throw aroundYou must put litter（垃圾）（垃圾）into the dustbin.dustbinputintoYou must not stay up late at night.stay up lateYou must brush your teeth twice a day.brush ones teethtwice a da
3、yYou must not readin the sun.in the sunwalk on the lawnYou must not walk on the lawn.You mustYou mustnt/Dont stay up late at night.read in the sun.put litter into the dustbin.do morning exercises.throw litter around.brush your teeth twice a day.walk on the lawn.litter n.垃圾垃圾,不可数名词。不可数名词。eg：There_(许多
4、垃圾）许多垃圾）in the river.is much litterMatch themsmokeWhats he doing？He is .What do you think of smoking？smokingListen and answer the following questions.Does Marias father smoke?Is smoking good or bad for our lungs？What must Maria do？Yes,he does.Its bad.She must ask her father to give up smoking.Learn
5、by yourselfSection B1aLook,listen and say Maria:Wang Junfeng:Maria:Hi,Wang Junfeng!You must not read in the sun.What are you reading?Im reading an article in the newspaper about smoking.Does your father smoke,Maria?Yes,he thinks smoking can help him relax.But,you know,smoking is bad for his health.Y
6、es,his teeth are yellow and he often coughs.Thats too bad.Look,the article says smoking is bad for our lungs.It may cause cancer.Oh!How terrible!I must ask him to give up smoking.May I borrow your newspaper and show it to my father?Sure.Wang Junfeng:Maria:Wang Junfeng:Maria:Wang Junfeng:Group WorkvS
7、moking can help him relax.动名词做主语。eg：Smoking is bad for your health.may 情态动词：情态动词：1.表可能；表可能；2.可以，表请求。可以，表请求。eg：1.It may cause cancer.2.May I borrow your newspaper and show it to my father?How terrible!感叹句。感叹句。how+adj./adv.I must ask him to give up smoking.ask sb.to do sth.让某人干某事让某人干某事give up+v.ing 放弃
8、干某事放弃干某事 Improve yourselevs 材料：材料：1.（1）一支香烟里的尼古丁，可以毒死）一支香烟里的尼古丁，可以毒死 一一 只老鼠。（只老鼠。（2）20支烟中的尼古丁支烟中的尼古丁 可以毒死一头可以毒死一头 牛。牛。(3)50一一70毫克的毫克的 尼古丁可以毒死一个人。尼古丁可以毒死一个人。2.中国烟民受烟毒危害的程度：中国每中国烟民受烟毒危害的程度：中国每 年约有年约有100万人死于吸烟所引起的疾病，万人死于吸烟所引起的疾病，每天有每天有2000多人因为吸烟而死亡。多人因为吸烟而死亡。（proposal 倡议书）倡议书）倡议书倡议书 Keeping away from s
9、moking Dear friends，I am writing this proposal（倡议书）（倡议书）to call on（号召）（号召）everyone to keep away from smoking 正文正文 In a word（总之），（总之），in order to（为了）（为了）keep healthy,please keep away from smoking!Yours,Maria Keeping away from smoking Dear friends，I am writing this proposal（倡议书）（倡议书）to call on（号召）（号召）
10、everyone to keep away from smoking.You know,smoking is bad for our health.If you smoke,your teeth will turn yellow and you will often cough.Smoking is bad for our lungs.It may cause cancer.Smoking will affect（影响）（影响）the health of others.Smoking will waste（浪费）（浪费）much money and it may cause fire.In a word（总之），（总之），in order to（为了）（为了）keep healthy,please keep away from smoking!Yours,Maria1.Master the use of“must”and“must not”.2.Talk about the harm of smoking.Sum up