Unit 2 How often do you exercise?
【重点句型】
1. I go to the movies maybe once a month.
我可能一个月看一次电影。
2. ——How often does he watch TV?
他多久看一次电视?
——He hardly ever watches TV.
他几乎不看电视。
3. ——Do you go shopping?
你购物吗?
——No, I never go shopping.
不，我从来就不购物。
4. Here are the results.
下面就是结果。
5. We found that only fifteen percent of our students exercise every day.
我们发现仅仅百分之十五的学生每天锻炼。
6. We all know that many students often go online, we were surprised that ninety percent of them use the Internet every day.
我们都知道很多学生经常上网，我们很吃惊他们中有百分之九十的人每天上网。
7. Although many students like to watch sports, game shows are the most popular.
虽然很多学生喜欢看体育节目，但游戏节目依然是最受欢迎的。
8. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.
通过上网或看游戏节目来放松很好，但是我们认为最好的放松方法还是通过锻炼。
9. It’s healthy for the mind and the body.
对思想和身体都很健康。
10. So start exercising before it’s too late!
开始锻炼，为时不晚。
【重点语法】
1. 频率副词:
always, usually, often, sometimes, never
频率副词在句中通常放在实义动词之前,be动词或助动词之后。
常用于一般现在时态中。
2.“次数”的表达方法
一次 once，
两次twice，
三次或三次以上：基数词+ times,
如：three times,five times,
3. how often“多久一次”问频率，回答常含有频率词组或短语。
常见的how疑问词：
1)How soon多久(以后)
—How soon will he be back?
他多久能回来?
—He will be back in a month.
他一个月后能回来。
2)how long“多久”
—How long did it take you to clean the house?
你打扫房子用了多久?
—It took me half an hour to clean the house.
我打扫这房子用了半小时。
3)How many+名复
How much+不可名
“多少” 问数量
(how much 还可问价格)
【重点短语】
1. go to the movies 去看电影
2. look after = take care of 照顾
3. surf the internet 上网
4. healthy lifestyle 健康的生活方式
5. go skate boarding 去划板
6. keep healthy=stay healthy 保持健康
7. eating habits 饮食习惯
8. take more exercise 做更多的运动
9. the same as 与什么相同
10. be different from 不同
11. once a month一月一次
12. twice a week一周两次
13.make a difference to 对……有影响/作用
14. most of the students=most students
15. shop=go shopping=do some shopping 购物
16. be good for 对……有益
17. be bad for 对……有害
18. come home from school放学回家
19. of course = certainly = sure 当然
20. get good grades 取得好成绩
21. keep/be in good health 保持健康
22. take a vacation 去度假
【词语辨析】
1. maybe / may be
maybe 是副词，意为“大概， 可能，或许”，一般用于句首。
may be是情态动词，意为“可能是…，也许是…，大概是…”.
The baby is crying. Maybe she is hungry.
The woman may be a teacher.
2. a few / few / a little / little
People can live to 100, but few people can live to 150.
There is little time left. I won’t catch the first bus.
Could you give me a little milk?
3. hard / hardly
hard作形容词，意为“困难的，艰苦的，硬的”;作副词，意为“努力地，猛烈地”。
hardly为副词，意为“几乎不”。
The ground is too hard to dig.
I can hardly understand them.
It’s raining hard. The people can hardly go outside.
4. As for homework, most students do homework every day.
as for…意思是“至于;关于”，+名词、代词或动词的-ing形式(即动名词)。
如：
As for him，I never want to see him here.
至于他，我永远不希望在这里见到。
As for the story，you’d better not believe it.
关于那故事，你最好不要相信。
5. That sounds interesting.
这是“主语+系动词+表语”结构的简单句。
sound(听起来)，
look(看起来)，
smell(闻起来)，
taste(尝起来)，
feel(觉得)，
seem(好像)，
grow(变得),
get(变得)等
词在英语中可用作系动词，后跟形容词作表语。
如：
It tastes good. 这味道好。
The music sounds very sweet. 这音乐听起来很入耳。
The smoke grew heavier and heavier. 烟雾变得越来越浓了。
6. percent 名词，意为“百分之……”
百分数的表示方法：
基数+ percent (不用复数形式)，
percent做主语时，谓语动词的数要根据其后面的名词来确定。
50%：fifty percent 百分之五十
Fifty percent of the apples are bad. 50%的苹果都坏了。
Twenty percent of the meat is in the fridge. 20%的肉都在冰箱
7. not… at all 意为 “一点也不” ，not应放在be动词、情态动词或助动词之后。
The story isn’t interesting at all.
那个故事一点也没有趣。
8. It is + adj. to do sth. 做某事是……的。
It is interesting to play computer games.
玩电脑很有趣。
9. take, spend, pay
It takes sb. some time to do sth.
意为“花费某人……时间来做某事”。
人(sb.) spend 时间/钱 on sth.
“买某物花了……钱”。
人(sb.) spend 时间/钱 (in) doing
“花费多少时间来做某事”。
pay 的主语必须是人，而“花钱买某物”为pay….for…
10. however 副词，意为“然而，可是”，表示转折关系，可放在句首、句中、句末。