Unit 2 Topic 3Section D课件仁爱版英语八年级上册.pptx

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1、Topic 3 Must we exercise to prevent the flu?Section D,Unit 2 Keep Healthy,Language goals,By the end of the class, you will be able to1.Master the following words ,phrases and sentences:Words & phrases： stretch, equipment, choose, instead, instead of2. Master the usage of must & have to.3. Use Reflex

2、ive Pronouns,Quick mind,n. 设备，器材,equipment,adv. 代替，反面,instead,v. 选择；挑选,choose,n. 经理，活力,energy,另一方面,on the other hand,代替,instead of,Should we need to warm up before running？Yes, we should.,Ask and answer,Is it necessary for us to buy good exercise equipment？No, it isnt.,Should we spend a lot of time

3、exercising?No, we shouldnt.,Modal Verbs (): must/have to,Must,have to,neednt,must,have to,Grammar,情态动词 must与 have tomust 和 have to 用作情态动词，都有“必须”的含义，两者有时可以互换使用。不过两者也各有其“独特”之处。使用场合不同：must 表示主观上认为有义务、责任而“必须”做的事，是说话人的主观看法；也用于肯定的推测，意为“一定，必定”。而 have to 则强调由于客观原因而不得不做某事，是客观上的“必须”，常译为“不得不”。e.g. 1. I must go

4、 home now.我现在必须回家了。2. You must be hungry after the long walk.走了这么长的路，你一定饿了。3. My mother is ill, so I have to go now.我妈妈病了，所以我现在不得不走了。,人称和时态的变化不同：must 没有人称和时态变化；而 have to 有人称、时态变化，在一般现在时中，第三人称单数用 has to，其它人称用 have to，一般过去时中用 had to。e.g. 1. Lucy must go to bed before 11.露西必须 11 点前睡觉。2. He has to stay

5、in bed for 3 or 4 days becauseof his illness.因为他的病，他不得不卧床 3 到 4 天。,疑问句的答语不同：对 must 开头的一般疑问句作肯定回答时用 must，否定回答则用 neednt 或 dont /doesnt have to；包含 have to 的句子变为一般疑问句或否定句，要根据句中时态由助动词 do的相应形式来构成。肯定、否定回答也要借助助动词 do 的相应形式来完成。e.g. 1. Must I return the book today?我必须今天还书吗？ No, you neednt. You can do it tomorr

6、ow.不，你不必。你可以明天还。 Yes, you must.是的，你必须今天还。,2. Does she have to have piano lessons everyweekend?她每周末都得上钢琴课吗？ Yes, she does.是，她每周末都得上钢琴课。 No, she doesnt.不，她没必要每周末都上钢琴课。注：must 的否定形式 mustnt 表示“不许，禁止”。,Do,have,No I dont,doesnt have,No you neednt,No you dont have to,had better not,Reflexive Pronouns,Person

7、,Number,myself,yourselves,herself,themselves,Grammar,1.用适当的反身代词填空。 I cooked _ a meal and then I watched TV. If you dont help him, hell have to do it all by _. I put the food on the table and asked them to help _. Jack and Peter, did you clean the room _? Be careful with that knife or youll cut _. Jo

8、hn hurt _ when he was playing football.,myself,himself,themselves,yourselves,yourself,himself,May,ahead,busy,like,leave,not to forget,say,up,Functions,The more exercise, the better. ( )We should stop exercising when we are hurt. ( )Drinking while playing sports is bad for our health. ( )Exercising i

9、n a gym is not a good idea. ( ),Tick the following ideas you think are correct before reading. Then read the passage and check.,How to Exercise WellWarn up.It is important to warm up before you exercise. You need to stretch your legs, arms, back and neck before you do any difficult activities like r

10、unning.,Find good place to exercise.You do not need to spend a lot of money exercise. You can run or play sports in a park or in your school gym. You dont need to buy exercise equipment for your home. Just get your body moving!,Dont work too hard.Choose a sport that you enjoy and then your exercise

11、will be fun instead of work. Also, you only need to exercise a few times each week. If you exercise for 30 minutes each time, you will stay healthy.,Drink enough water.It is important to drink water when you exercise. Your body needs the water for energy and for keeping cool.,Be careful!If you hurt

12、yourself while you are exercising, rest until you feel better. Exercising when you are hurt is bad for your health.,1. need to do sth. 需要做某事每个人都需要天天运动。Everyone _ _ exercise everyday.2.spend time/money on sth. 花费时间金钱在某事上 spend time/money doing sth. 花费时间金钱做某事我们不应该花费太多时间玩游戏。We shouldnt _ too much time

13、_ computer games.I spent 30 yuan _ this book.,needs to,spend playing,on,Language points,3. buy sth. for sb. 为某人买东西4. instead of 代替e.g. 我会代替你去参加晚会。I will go to the party _ you.5. Rest until you feel better. until：直到e.g. 我做作业直到我妈妈回家。I did my homework _ my mother came home.,instead of,until,Language po

14、ints,I. 用方框中所给单词的适当形式填空。1. Many students in my class _ to go to school by bike.2. There is a lot of _ in the park for people to exercise with.3. Before you play football, you should _ your legs to warm you up.4. He doesnt watch TV in the evening. _, he reads hooks.5. The chance will not find you _.,

15、Exercises,choose equipment stretch Instead itself,Exercises,II. 单项选择。( )1. Must I get up early tomorrow?No, you _.A. mustnt B. wont C. cant D. neednt( )2. Its nothing serious. You dont have _ any medicine.A. takes B. to take C. taking D. take( )3. Its raining hard now. You _ go out.A. must B. need C

16、. had better D. had better not,DBD,Exercises,( )4. The girl wanted to play baseball _ at home.A. instead B. instead of C. instead of staying D. instead of stay( )5. You should _ before you exercise.A. warm out B. warm up C. warm down D. warm in,CB,Homework,Write a passage about your favourite sport.Preview Unit 3 Topic 1-Section A.,Bye-bye!,