Unit2 Topic3 Must we exercise to prevent the flu?
SectionC 同步练习
单选。
1.______ good for our health.
A．Do exercise is B．Doing exercise is
C．Do exercises are D．Doing exercises are
2.--- You needn’t take an umbrella. It isn’t going to rain.
--- Well, I don’t know. It ______do.
A．might B．need C．would D．should
3.Doctors say that exercise is important for health, but it ________ be regular exercise.
A. can B. will C. must D. may
4.She________clean the classroom today.
A. have to B. doesn’t have to C. don’t have to D. isn’t have to
5.It’s very warm.You________to wear the coat.
A. must B. mustn’t C. don’t have to D. have to
二、情景对话。
How to Exercise Well
?Warm up
It's important to warm up before you exercise．before you do any difficult activities，（1）___
?Find good places to exercise．
You do not need to spend a lot of money exercising．（2）___You don't need to buy equipment for your home．Just get your body moving．
?（3）___
Choose a sport that you enjoy and then your exercise will be fun．Also，you only need to exercise a few times each week．If you exercise for 30minutes each time，you will stay healthy．
?Drink enough water
It's important to drink water when you exercise．（4）___
?Be careful!
If you hurt yourself while you are exercising，（5）___ Exercising when you are hurt is bad for your health．
A．Don't work too hard． B．You can run or play sports in a park or in your school gym． C．rest until you feel better． D．Your body needs it for energy and for keeping cool． E．you need to stretch（伸展）your arms，back and neck．
三、完形填空。
Hiking is a good way to exercise.Do you like it?Hiking 1 health. Hiking is a good way to exercise.Do you like it? Hiking 1 health.Most people choose to go hiking in the countryside,in the forests 2 in the mountains.They like to be close to nature and exercise 3 fit at the same time. If you are a beginner,you should start with a hike that you can finish 4 one day.As you get stronger,you can go on overnight(整夜的) hikes.Later you can go on 5 hikes which may last for days or weeks. For safety reasons,hikers should go hiking with others.You should have one or more friends with you. 6 ,if you decide to be alone,you’d better let someone know where you are going and when you will 7 .It is also a good idea to bring 8 . Backpacking is also a kind of 9 .You can carry food,clothing and other things on your back in a pack.Backpackers can stay many days in places where there is 10 food to buy. （ ）1.A.are good at B.is good at C.are good for D.is good for （ ）2.A.and B.but C.so D.or （ ）3.A.keep B.to keep C.keeping D.keeps （ ）4.A.in B.after C.on D.at （ ）5.A.long B.short C.longer D.shorter （ ）6.A.However B.But C.Because D.Until （ ）7.A.return B.return back C.arrive at D.reach （ ）8.A.some books B.some money C.a guide D.a map （ ）9.A.pleasure B.hike C.trip D.travel （ ）10.A.none B.no any C.not D.no
四、阅读。
“ Early to bed and early to rise make a man healthy , wealthy and wise.”? This is an old English saying. It means that when we go to bed early , we can get up early the next morning. Then we will become healthy. We will also become rich and clever. ??? This is true. To keep healthy，we must have enough sleep. Experts(专家) say that adults should get seven to eight hours of sleep a night. Teenagers need nine to ten hours. And school-aged children may need more than ten hours of sleep. Children who do not have enough sleep can't do their work very well. They won't be wise and they may not become wealthy！ ??? We also need exercise. Walking , running, swimming and playing games are all exercise. Exercise keeps us strong. It also helps the blood to move around the body. This is very important. Our blood takes the nutrition( 营养 ) from food to all parts of our body. ??? The head also needs blood. So exercise that moves the blood to our head helps usthink better！
（1）If we get up early and go to bed early, we'll??????? .
A.?become weak B.?have more time???????????
C.?be healthy D.?have more work to do
（2）Who needs most hours of sleep to keep healthy？
A.?Adults. B.?Teenagers. C.?Experts. D.?School-aged children.
（3）A child??????? ?when he does not have enough sleep.
A.?can't study well B.?will be wise
C.?will be wealthy D.?will be active in class
（4）A person needs exercise because??????? .
A.?he is not strong enough ?B.?it helps make him healthy C.?he has a lot of homework to do D.?it can bring him much blood
（5）Which of the following is NOT true？
A.?Exercise helps the blood to move.
B.?Exercise is good for a person's head. C.?If we have enough blood, we'll be wise.
D.?It's good for us to get up early and go to bed early.
Unit2 Topic3 Must we exercise to prevent the flu?
SectionD 同步练习答案
BACBC
二、EBADC
课件35张PPT。Unit 2 Keeping healthy
Topic3
Must we exercise to prevent the flu?仁爱科普版 八年级上Section DWarming-up：Let's enjoy a song.Exercising is very important for our health. But how to exercise well? Let's think about these questions:lead-in：1. What should we do before we exercise?We should warm up.
we need to stretch our legs, arms,
back and neck before we do any
difficult activties like running.热身，做热身运动伸展，舒展 2. Must we go to a fitness centre to exercise?Lead-in：健身房 No, we needn't. 3. Must we buy exercise equipment for our home? No, we needn't.健身器材4.Must we spend a lot of time exercising?
No, we needn’t.花费时间金钱等Lead-in：1aListen to 1a and mark True or False. It’s important to warm up before exercising. ( )
It’s necessary to buy exercise equipment. ( )
We should choose a sport that we enjoy. ( )
We shouldn’t drink a lot of water when we exercise. ( )
We had better not exercise when we are hurt. ( ) TFTFTListening：Tick the following ideas you think are correct before reading. Then read the passage and check.The more exercise, the better. ( )
We should stop exercising when we are hurt. ( )
Drinking while playing sports is bad for our health. ( )
Exercising in a gym is not a good idea. ( ) Reading：1aRead 1a again and fill in the blanks. How to Exercise Well
We need to __________.
We should _________________________.
We had better not ______________.
We should __________________.
We mustn’t ________ when we are hurt. warm up find good places to exercise work too hard drink enough water exerciseReading：How to Exercise Well Warm 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 running.
Find good places to exercise.
You do not need to spend a lot of money exercising.You can run or play sports in a park or in your school gym.You don't need to buy exercise equipment for your home.Just get your body moving!Reading：Read 1a again and repeat.热身伸展你的腿健身器材Don’t work too hard.
Choose a sport that you enjoy and then you exercise 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 yourself while you are exercising, rest until you feel better. Exercising when you are hurt is bad for your health.代替小心，当心 知识总结1. spend 的用法：spend 花费 过去式：spent 主语必须是人， 常用于以下结构：
sb. spend time/money on sth. 花费时间金钱在某事上
sb. spend time/money（in）doing sth. 花费时间金钱做某事
①我们不应该花费太多时间玩游戏。
We shouldn’t spend too much time ________(play) computer games.
②I spent 30 yuan on this book.playingcost的主语是物或某种活动， 还可以表示“值”， 常见用法如下：
sth. costs (sb.) ＋金钱 某物花了（某人）多少钱。
eg：A new computer costs a lot of money.
买一台新电脑要花一大笔钱。take后面常跟双宾语， 常见用法：
It takes sb. ＋时间＋to do sth. 做某事花了某人多少时间。
eg：It took them three years to build this road. 他们用了三年时间修完了这条路。另外三个含义为“花费”的词的用法： 知识总结pay的基本用法是：
sb. pay money for sth. 付钱（给某人）买……。
eg：I have to pay 20 pounds for this room each month.
我每个月要付20英磅的房租。 另外三个含义为“花费”的词的用法： 知识总结 (1) I spent 100 yuan on the books. (改为同义句)
I _____ 100 yuan for the books.
I spent 100 yuan _______ the books.
The books _______ me 100 yuan.
It ______ me 100 yuan _______ _______ the books.paidcostExercise：句型转换:buyingtookto buy2. buy sth. for sb. = buy sb.sth. 为某人买东西
eg. I bought a shirt for my father.
= I bought my father a shirt. 我为爸爸买了一件衬衣。 知识总结3. instead 作副词,是“代替”、“顶替”的意思，常用于句末。
eg. Mr.Wang is ill, I will take his class instead．
instead of为介词短语,它后面可跟名词、代词、动名词、介词短语或形容词等。
eg. I will clean the window instead of him.
We will skate instead of playing football.Rewrite 1a and give a report.You can write like this:
How to exercise well
When we are exercising, we should pay attention to the following rules. First, … Second，… Third，… Then，…Practice：Groupwork：Talk about how to exercise well according to
the suggestions in 1a, you can add your own
suggestions:A: Exercising is very important for pur health,
but how to exercise well? can you give me
some suggestions?
B: You should ....
A: That's a good idea.
C: You'd better...
D: ...语法专讲must和have to的区别和用法1. 强调重点不同
两者都表示“必须”，但must侧重于说话者的主观看法，have to则侧重指客观需要，含有“不得不”或“被迫”之意。比较：
You can borrow my car, but you must bring it back before ten.
你可以借我的汽车，但必须在10点以前开回来。
I lost my pen, so I have to buy one. 我的钢笔丢了，所以得去买一支。
语法专讲must和have to的区别和用法 2. 所用时态不同
must 没有人称和时态的变化，而 have to则有人称和多种时态形式。如：
She must go with me. 她必须同我一起去。
We had to borrow a lot of money. 我们不得不借一大笔钱。
She has to sell her house. 她不得不把房子卖掉。
3. 动词搭配不同
根据语义的需要，have to可以与情态动词搭配使用，而must本身作为情态动词，显然不能这样用。如：
He may have to cancel the plan. 他可能需要打消这个计划。
If we missed the train, we should have to wait an hour at the station. 假如我们赶不上这班火车，我们就得在车站再等一小时。
must和have to的区别和用法 4. 否定式的意义不同
must 的否定式 mustn’t 意为“不准”，“不允许”；而 have to 的否定式 don’t have to 意为“不必”(=needn’t)。比较：
You mustn’t tell him about it. 你一定不要告诉他这件事。(这可能是秘密)
You needn’t tell him about it. 你不必告诉他这件事。(他可能知道了)
Must we finish it now? 我们必须现在完成它吗？
No, you needn't. / No, you don't have to. 不，不必。must和have to的区别和用法Modal Verbs (Ⅲ): must/have to Must have to needn’t musthave to 语法讲解 (1) I have to go to school on foot today. (改为一般疑问句)
_____ you _____ to go to school on foot today?
(2) Jim has to stay at home to look after his mother. (变为否定句)
Jim _______ ______ to stay at home to look after his mother.
(3) Do you have to cook for yourself? (否定回答)
____, __ ______.DohaveNo I don’tdoesn’t haveExercise：句型转换: (4) Must I finish my homework now? (否定回答)
____, ____ ________.
或 ____, _____ _____ ______ ____.
(5) We had to go there by bike. (就划线部分提问)
______ _______ you______ to go there ?No you needn’tNo you don’t have toHow did haveExercise：句型转换:Reflexive Pronouns反身代词PersonNumbermyselfyourselvesherselfthemselves 语法讲解反身代词在句中的用法:
1. 用作同位语(加强被修饰词的语气，紧放在被修饰名词后, 或句末):
The box itself is not so heavy. 箱子本身并不重。
Never leave to others what you should do yourself.
不要把自己该做的事留给别人做。
2. 用作宾语(动词或介词的宾语):
Take good care of yourself. 好好照顾你自己。 语法讲解3. 用作表语
The poor boy was myself. 那个可怜的孩子就是我自己。
4. 反身代词不能做主语，但可作主语同位语，放在主语后或句末。
I went to the cinema myself. 我自己去了电影院。
它还可以借助 and, or, nor 等连词与其他名词一起构成并列主语(且位于并列主语的后部) :
My brother and myself went there yesterday.
昨天我兄弟和我一起去了那儿。 语法讲解① I cooked ______ a meal and then I watched TV.
② If you don’t help him, he’ll have to do it all by _________.
③ I put the food on the table and asked them to help __________.
④ Jack and Peter, did you clean the room ________ ?
⑤ Be careful with that knife or you’ll cut ________.
⑥ John hurt ______ when he was playing football. myselfhimselfthemselvesExercise： 用适当的反身代词填空。yourselvesyourselfhimself1. dress oneself 自己穿衣
2. come to oneself 恢复知觉
3. enjoy oneself 过的开心
4. forget oneself 忘我、失态
5. help oneself to 随便吃、随便用
6. make youself at home 不受约束
7. say to oneself 心里想
8. talk/speak to oneself 自言自语
9. teach oneself 自学由反身代词构成的常见短语：Functions Mayaheadbusylikeleave not to forget say upSummary：Today we learn:1. Suggestions about how to exercise well.2. must和have to的区别和用法。3. 反身代词的用法。Make a handwritten English newspaper about keeping healthy.
The following information will help you.Homework：Write Your Own NewspaperHomework：Write Your Own NewspaperHere are examples:上21世纪教育网 下精品教学资源谢谢21世纪教育网（www.21cnjy.com)中小学教育资源网站有大把优质资料？一线名师？一线教研员？
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