unit 1: how often do you exercise?
【单词】always, usually , often, sometimes , hardly , ever, never. how often, once , twice , three times a week , every day. milk, junk food, health, unhealthy, habit, exercise, most, result, try, different, maybe, although, arm, foot, tooth, ear, eye, advice, thirsty ,forget, finish, plan .
词组】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。
exercise=do sports锻炼
8. eating habits 饮食习惯。
9. take more exercise 做更多的运动。
10. the same as 与什么相同
11. be different from 不同。
12. once a month一月一次。
13. twice a week一周两次。
14. make a difference to 对什么有影响
15. how often 多久一次。
16. although = though虽然。
17. most of the students=most students
shopping=do some shopping
19. as for至于。
20. activity survey活动调查
21. do homework做家庭作业。
22. do house work做家务事
23. eat less meat吃更少的肉。
24. junk food垃圾食物
25. be good for 对什么有益。
26. be bad for对什么有害。
27. want to do sth 想做某事。
28. want sb to do sth想某人做某事。
29. try to do sth 尽量做某事。
30. come home from school放学回家。
31. of course = certainly = sure当然。
32. get good grades取得好成绩
33. some advice
34. hardly=almost not几乎不。
35. keep/be in good health保持健康。
stressed紧张的，有压力的。
37. take a vacation 去度假。
back 回来。
应掌握的句子】
1. how often do you exercise? 你（你们）多久锻炼一次身体？
频率副词，如：once, twice, three times…, sometimes, often, quite, often, never, every day, once a week , twice a month , three times a month , three or four times a month 等。
2. “what do you usually do on weekends?” i usually play soccer.”
3. “what’s your f**orite program?” it’s animal world.”
4. as for homework , most students do homework every day .
as for...意思是“至于；关于”，常用于句首作状语，其后跟名词、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。
至于我自己，我现在不想去。 (as for myself, i don’t want to go now. )
至于那个人，我什么都不知道。(as for the man, i know nothing about him.)
5. mom wants me to get up at 6:00 and play ping-pong with her .
want to do sth. 意思是“想要做某事”； want sb. to do sth.意思是“想要某人做事”。如：
do you want to go to the movies with me？你想和我一起去看电影吗？
the teacher doesn't want us to eat hamburgers.老师不想让我们吃汉堡包。
6. she says it’s good for my health.
be good for...表示“对……有益（有好处）”;其反义为：be bad for...这里for 是介词，后跟名词、代词或动名词）
如：it's good for us to do more reading. 多读书对我们有好处。
reading in bed is bad for your eyes.在床上读书对你的眼睛有害。
7. how many hours do you sleep every night?
8. i exercise every day, usually when i come home from school.
9. my eating habits are pretty good . 这里pretty相当于very 。
10. i try to eat a lot of vegetables, usually ten to eleven times a week.
try to do sth.表示“ 尽力做某事 ” 不包含是否成功的意思而try doing sth.表示“（用某一办法）试着去做某事”。
如： you’d better try doing the experiment in another way.
你最好试试用另一种方法做这个试验。
11. my healthy lifestyle helps me get good grades.
help sb.(to) do sth.帮助某人做某事。
12. good food and exercise help me to study better.
这里better是well的比较级，而不是good的比较级。
13. is her lifestyle the same as yours or different?
is her lifestyle the same as your lifestyle or is her lifestyle different from yours?
be the same as … be different from …
14. what sports do you play?
15. a lot of vegetables help you to keep in good health.
keep in good health = keep healthy = stay healthy
16. you must try to eat less meat .
try to do sth.表示“ 尽力做某事 ” 不包含是否成功的意思，less是little的比较级。
17. 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（好象），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**听起来很入耳。
the smoke grew he**ier and he**ier. 烟雾变得越来越浓了。
词语辨析】一、maybe / may be
1. the baby is crying, she is hungry.
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