仁爱科普版八年级上册Unit 2 Keeping Healthy Topic 2 I must ask him to give up smoking.课件 (共39张PPT)

(共39张PPT)
Unit 2
Keeping Healthy
Topic 2 Section D
学习目标
重点探究
自主学习
学习导航
当堂检测
课堂总结
拓展提升
新课导入
Do you have healthy living habits
What are they
学习目标
1.能用英语描述健康与不健康的习惯
2.能熟练使用情态动词的肯定或否定形式向别人提出建议或劝诫
自主学习
New words and expressions
shower n.&v. 淋浴
fact n. 事实上，实际上
unhealthy adj. 不健康的
chemical n. 化学品
cigarette n. 香烟，纸烟
body n. 身体
disease n. 病，疾病
harm v.&n. 危害，伤害，损害
smoker n. 吸烟者
second-hand adj. 二手的，旧的
risk n. 危险，风险 v. (使) 冒......的风险
possible adj. 可能；能做到
as ... as possible 尽量......地
We mustn't spit everywhere.
We shouldn't throw litter around.
We mustn't smoke in public .
We should eat more healthy food .
We should take showers often .
重点探究
Modal Verbs (Ⅱ): must/mustn’t; may; can
You _________ throw litter around.
He thinks smoking ______ help him relax.
It _____ even cause cancer.
I _____ ask him to give up smoking.
_______ I borrow your newspaper and show it to my father
can
May
mustn’t
must
can
Grammar
_______ up late is bad for your health.
How terrible!
It’s ______ for your health.
Don’t read ____ the sun.
It will keep you ______ during the day.
in
Staying
good
Functions
active
1 Listen and number the following pictures.
Then make sentences with the structures in the box.
should / shouldn’t…
We
must / mustn’t…
1
2
3
4
5
6
We should take showers often.
We should wash the hands before meals.
We should often open the window to keep the air fresh.
We mustn’t drink sour milk.
We should tidy our rooms and often sweep the floor.
We mustn’t spit in public.
Some people think that smoking ________ ( must/can) help him relax. In fact, smoking is really __________ (healthy/unhealthy). Do you know that there ______ (is/are) over 4000 chemicals in cigarettes These chemicals are _______ (good/bad) for our bodies. They _____ (must/can) cause cancer and other diseases.
can
unhealthy
are
bad
can
2 Complete the passage with the correct words.
The smoke from cigarettes harms ____________ (only/ not only) smokers but also other people. It’s called “second-hand smoke” and it ______ (can/can’t) be more dangerous and has higher risks. Smokers shouldn’t use smoking to help them relax. They ______ (must/mustn’t) give up smoking as soon as possible.
not only
can
must
Work in groups, write down the good habits and bad habits around you.
Good habit Bad habit
Drink a glass of milk every day. Spit everywhere.
… …
Group Work
4. Washing hands before meals.
1. Taking a walk after meals.
2. Going to bed early and getting up early.
3. Drinking enough water every day.
Good habits
4. Going to school without breakfast.
1. Eating too much meat.
2. Going to bed late and getting up late.
3. Throwing litter around.
Bad habits
Project
( )1.How often do you walk to school
A. Never. B. Sometimes. C. Always.
( )2.How often do you eat candy
A. Often. B. Seldom. C. Never.
( )3.How long do you usually sleep at night
A. Less than 7 hours. B. More than 10 hours.
C. 7-10 hours.
Testing How Healthy You Are
1. Choose the answer to each question according
to your lifestyle.
( )4.How often do you exercise
A. Less than three times a week.
B. Three to six times a week.
C. Every day.
( )5.How often do you eat fruit and vegetables
A. Never. B. Seldom. C. Often.
( )6.How long do you watch TV every day
A. More than 4 hours. B. 2-4 hours.
C. Less than 2 hours.
Scores: A = 1 point B = 2 points C = 3 points
Total score: _________
Conclusion What you should do to keep healthy.
(6-9) Unhealthy
(10-13) Just so-so
(14-18) Healthy
2. Write a passage about how to keep healthy.
You may use the questions above as a guide.
Language points
拓展提升
1. We should often open the window to keep the air fresh. 我们应该经常开窗保持空气清新。keep 后接形容词。意为“保持（某种状态）”，keep作系动词，也可以用be替换。如：keep quite!=be quite! 请保持安静！【扩展】keep sb./sth. +形容词/动名词表示“让某人/ 某物处于某种状态”。 如： Keep the windows open, please. 请把窗户打开。Don’t keep him waiting. 不要让他一直等着。
2. Smokers shouldn’t use smoking to help them relax. 吸烟者不应该用吸烟来放松自己。use sth to do sth. 意为“用....去做....”如：We often use the dictionary to look up the new words. 我们经常使用词典去查阅新单词。
3.In fact, smoking is really unhealthy
事实上，抽烟真的是不健康的。In fact 事实上
eg. In fact, I like playing computer games.
事实上，我喜欢玩电脑游戏。In fact, I want to eat an ice cream.
事实上，我想吃一个冰激凌。
4.They must give up smoking as soon as possible .
他们必须尽可能快的戒烟。give up sth/ doing sth 放弃做某事as soon as possible 尽可能快的 as much as possible 尽可能多的 as small as possible 尽可能小的As+形容词+as possible 可以与as...as one can 互换使用。
如：Please write down your answer as fast as possible.=Please write down your answer as fast as you can.请尽可能快的写下你的答案。后也可以放中间，但代词只能放中间，
如：throw it around )
litter作动词，意思与throw about相当。
eg．Don't litter the ground with paper．
litter作不可数名词时，指“垃圾，废物”。
eg．You mustn't throw about litter．
5.The smoke from cigarettes harms not only smokers but also other people.
来自香烟的烟雾不仅伤害吸烟者，而且对其他人也有危害。
Not only…but also… 不仅…而且… 用于连接两个并列成分。
1. can 的用法: (1) 表示能力时一般译为“能、会”， 即有种能力，尤其是生来具备的能力，此时 may 和must 均不可代替它。 如：She can swim fast, but I can’t . 她能游得很快，但我不能。 I can see with my eyes. 我用眼睛看。 (2) 表示许可，常在口语中。如：You can use my dictionary. 你可以用我的字典。 (3) 表示推测，意为“可能”， 常用于否定句和疑问句中， 此时can’t 译为“ 不可能”。 如：Can the news be true 这个消息会是真的吗？
2. could的用法： (1) can的过去式，意为“ 能、 会”，表示过去的能力。 如：He could write poems when he was 10.
他十岁时就会写诗。 (2) could在疑问句中，表示委婉的语气，此时 could 没有过去式的意思。
如: --- Could I use your pen 我能用一下你的钢笔吗 --- Yes, you can.可以。（注意回答）
3. may的用法： (1) 表示请求、许可，比can 正式。 如：May I borrow your bike
我可以借你的自行车吗？ You may go home now.
现在你可以回家了。 (2) 表示推测，谈论可能性，意为“ 可能， 或许”，一般用于肯定句中。
如：It may rain tomorrow . 明天可能会下雨。 She may be at home. 她可能在家呢.
4. must的用法： (1) must 表示主观看法，意为“必须、一定”。 如：You must stay here until I come back.
在我回来之前你必须待在这儿。 Must I hand in my homework right now
我必须现在交作业吗？ (2) 其否定形式mustn’t表示“一定不要”“千万别”“禁止，不许”。
如：You mustn’t play with fire.
你不许玩火。 You mustn’t be late.
你一定不要迟到。
(3) 对must引导的疑问句，肯定回答为must，否定回答为needn’t 或 don’t have to. 如：--- Must I finish my homework now
我现在必须完成作业吗？ --- No, you needn’t.不，你不必。(4) must表示有把握的推测，用于肯定句。 如: The light is on, so he must be at home now.
灯亮着，他现在肯定在家。
当堂检测
1. — _____________________ (根据答语写问句) — I have a bad headache.2. — ____________________ (根据答语写问句) — Keeping the air clean and fresh can stop the germs.3. Lily does exercise for an hour every day. (对划线部分提问)__________ does Lily do exercise every day 4. Eating too much is not good for your health. (转换为同义句)______________ for your health _________ too much.5. I have enough food. It can keep me healthy. (将两句合并为一句)I have enough food __________ me healthy.
What’s wrong with you
What can stop the germs
How long
It’s not good to eat
to keep
课堂总结
重点单词和短语: shower, fact, unhealthy, chemical, cigarette , body, disease, smoker, harm, second-hand, risk, possible, as...as possible
吸烟的危害：
1. These chemicals are bad for our bodies. They can cause _______and other diseases.
2. The smoke from cigarettes harms not only smokers but other people. It’s called “____________” and can be more dangerous and has higher risks.
1.向别人建议最好做某事：___________+ 动词原形+...。
2.建议别人最好不做某事:
______________+动词原形+...
You’d better
You’d better not
cancer
second-smoke
Unit 2 Topic2
Section D