八年级上英语|Unit 1 how often do you exercise|知识点

Unit 1 How often do you exercise 谈论某项活动的频率
Textbook Notes(教材笔记)
Exercise的用法
v.不及物，意思是锻炼训练
如：I exercise every day
n. 锻炼a. 习题，练习，可数名词
如：she does her exercise every evening.
b. 运动、锻炼，不可数名词
如：her grandfather takes/ gets exercise every morning.
How often的用法
多久一次常用来询问事情发生的频率。
回答常用always,usually,often,sometimes,hardly ever,never, once a day,twice a week, every four years等表频率的词或短语。
如：how often do you watch TV
I watch TV twice a week.
注意区别以下短语：
How long多长时间答语为for+一段时间。
How soon将过多久，多久以后，常用将来时，答语为in+一段时间
How many times,多少次，表示数，答次数。
How far多远，问距离，答距离。
Hardly, hard
Hardly是adv.意为几乎不，几乎没有，almost和否定的词的组合可与hardly互换。例如：there’s hardly any meat left.=there’s almost no meat left.
在构成反意疑问句时，要前否后肯，如：
She hardly says a word, does she
Hard既是adj.又是adv.adj.意思为困难的，硬的，如it’s hard to work out this problem.计算出这个题是很困难的。Adv.为努力地猛烈地如：we work hard.我们都努力地工作。
Drink喝v.;饮料n.;与eat有区别。Eat吃v.
Want用法v.及物动词
后跟名词或代词作宾语。如：
She wants a red pen.
后跟不定式作宾语；want to do sth.想要做某事。如I am tired, I want to have a rest.
后跟动词不定式作宾语补足语。即：want sb. to do sth., 即想要某人做某事。如：her mother wants her to drink some milk every day.
拓展：wants sth.=would like sth,
Want to do sth.=would like to do sth.
类似的还有：help sb.(to) do sth.;help sb. woth sth.
It’s adj. to do sth. it’s adj. for sb. to do sth.
意思是(对某人来说)做某事是怎样的？
如：It’s good for my health.(它对我的健康有好处)
拓展：doing sth. is adj.=it’s adj. to do sth.
但是
Although,though,but都是虽然但是意思，但although,though必须用在虽然意思处，而but必须用在但是意思处，且两者不能同时使用。
如：maybe I’m not very healthy, although I have one healthy habit.
=I have one healthy habit, but maybe I’m not very healthy.
Kind of 有点儿。修饰adv.或adj.;与之相一致的还有alittle, a bit等
如：I think I’m kind of unhealthy.
我认为我有点儿不健康。
Keep用法
作连系动词，保持；使保持某种状态，其后可接形容词。如：请安静keep quiet,please.
保持身体健康
Keep in good health=keep(be) healthy=be in good health
让某人一直种某事
Keep sb. doing sth.
Must与have to
相同：均可表示必须。
不同点:must指主观上必须，have to 指客观上不得不。Must无时态变化，have to有时态及人称的变化。
如：She must work hard.
It’s raining, Tom has to stay at home.
Useful Expressions(有用表达)
Ⅰ、Useful expressions:
1. on weekends 在周末
2. go to the movies 去看电影
3. watch TV 看电视
4. surf the Internet 上网冲浪
5. twice a week 一周两次
6. once a month 一月一次
7. three times a day 一天三次
8. be good for 对……有好处
9. junk food 垃圾食品
10. how often 多久一次
11. try to do 试着做
12. a lot of 许多
13. of course 当然
14. look after 照看
15. eating habit 饮食习惯
16. as for 就…而言
17. stay/keep healthy 保持健康
18. help sb. (to) do sth. 帮助……做……
Ⅱ、Sentences:
1. What does she do on weekends 她在周末常干什么？
2. She often goes to the movies. 她经常去看电影。
3. I watch TV every day. 我每天都看电视。
4. We often surf the Internet. 我们经常上网。
5. I read English books about twice a week. 我大约一周两次看英语书。
6. I shop once a month. 我每月购物一次。
7. She says it’s good for my health. 她说这对我的健康有利。
8. How often do you eat junk food 你多久一次吃垃圾食品？
9. I look after my health. 我照看我的健康。
10. My eating habits are pretty good. 我的饮食习惯相当好。
Composition Examples(作文范文)