内容正文:
Unit 2
Keeping Healthy
Topic 2
Section D
学习目标
预习检测
知识梳理
课堂总结
学习
导航
重点探究
当堂检测
新课导入
How to keep a healthy living habit?
能用英语描述健康与不健康的习惯
1
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
学习目标
学习目标
学习目标
学习目标
1.Jenny speaks English not only in class, _______ also at home. A.and B.but C.so D.because2.I hope you finish the work as ______as possible. A.quick B.good C.quickly D.nice 3.Everyone _______ cross the road when the traffic lights are red. A.needn’t B.mustn’tC.wouldn’t D.may not
B
C
B
预习检测
4.Mrs. Wang looks young, but ______ he is more than forty. A.in fact B.in time C.at last D.seldom
5.—You can’t read in the sun. It’s bad for your eyes. —_______ A.Sorry, I won’t. B.Don’t worry. C.It doesn’t matter. D.Oh, thanks.
A
D
知识梳理
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. 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