人教版八年级英语上册Unit2知识点总结
Unit 2 How often do you exercise?
短语
help sb with sth 帮助某人做某事
2. hardly ever几乎从不
3. go shopping 去买东西
4. on weekends 在周末
5. once a week 一星期一次
6. twice a month 一个月两次
7. go to the movies 去看电影
8. every day 每天
9.how often 多久一次
10.Animal World 动物世界
11.use the Internet上网
12.be free＝be not busy=have time 有空
13.have dance and piano lessons上舞蹈和钢琴课
14.swing dance 摇摆舞
15.play tennis 打乒乓球
16.stay up late熬夜到很晚
17.go to bed去睡觉
18.eat a healthy breakfast 吃一顿健康的早餐
19.at least 至少，不少于，起码
20.go to bed early 早睡觉
21.play sports 做运动
22.be good for 对….有好处
23.be good at doing sth擅长做某事
24.junk food 垃圾食品
25.go camping去野营
26.in one’s free time 在某人的业余时间里
27.ask sb. about sth. 向某人询问某事
28.not ...at all 一点也不
29.for fun 为了娱乐
30.the answers to the questions 问题的答案
31. by doing.... 通过...
32.最受欢迎的the most popular
33.the best way to do sth.做某事的最好方式
34.such as 例如….像….这样
35.spend time with sb. 和某人一起度过
36.old habits lie hard 旧习难改
37.more than 多于
38.less than 少于
39.go to the dentist看牙科医生
词语辨析：
1.go to bed 强调“上床睡觉”的动作及过程，但人不一定睡着。I went to bed at eleven last night.
go to sleep 强调“入睡，睡着，进入梦乡”She was so tired that she went to sleep soon.
2.percent 百分数， 基数词 + percent： percent 没有复数形式，作主语时，根据所修饰的名词来判断谓语的单复数。
Forty percent of the students in our class are girls.
Thirty percent of time has passed.
3.more than 超过，多于，不仅仅， 相当于 over. 在句型转换中考查两者的同义替换。
I lived in Shanghai for more than / over ten years.
4. sometimes , sometime, some times , some time 的区别：
（1）sometimes 频度副词， “有时”。
例句：Sometimes I get up very early.
（2）sometime 副词，“某个时候”。 表示不确切或不具体的时间，对它提问用疑问词when.
例句： I will go to Shanghai sometime next week. ------When will you go to Shanghai next week?
（3）some times 名词词组， “几次，几倍”。其中time 是可数名词，对它提问用how many times.
例句： I have read the story some times. -------How many times have you read the story?
（4）some time 名词短语， “一段时间”. 表示“一段时间”时，提问时how long
例句：I will stay in shanghai for some time.
5 . how often 多久一次，用来提问动作发生的频率。回答用：once，twice, three times 等词语。
how long 多长，用来询问多长时间，也可询问某物有多长。
How long does it take to get to Shanghai from here?
How long is the ruler?
6. stay up late 指“熬夜到很晚，迟睡”。 Don’t stay up late next time.
stay up to do sth. 指“熬夜做某事”。 He stayed up all night to write his story.
7. hardly 几乎不 adv. 表频率
hard adv. 努力地 study hard 努力学习
adj. 困难的，坚硬的 It"s hard to do sth.做某事很困难
8. maybe adv. 大概，或许，可能 Maybe you are right.
may be 情态动词+be结构 可能是 You may be right.
句型：
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. —How often do you exercise?你多久做一次运动？一Every day.每天。
4. 一What does he do on weekends?他周末做什么？
一He usually watches TV.他通常看电视。
5. —What’s your favorite program?你最喜欢什么节目？—Animal World.《动物世界》。
6. —How many hours do you watch TV every week?你每周看多少小时的电视？
一One to four.—到四小时。
7. Ninety percent of the students always use the Internet. 90% 的学生总是使用互联网。
语法专项
1. 频度副词
1）含义：表示次数，频率的副词称为频度副词。常见的频度副词按频率发生的高低依次为
Always-usually-often-sometimes-seldom-hardly ever-never
2) 表示具体的频率、次数时，一次用once,两次用twice,三次及以上用”基数词+times”表示：three times
3) 位置：一般放在实义动词之前，be动词、助动词或情态动词之后
We never eat junk food. I can hardly say a word.
4)对频度副词提问时，用how often How often do you exercise? Never.
作文：
1：Vince通常6:30在家吃早饭。以前他喜欢吃快餐，现在他改变了他的饮食。早饭他常常吃些牛奶、面包和鸡蛋。中午12:00，他在学校吃午饭。他常常吃一碗饭、一些肉和一些蔬菜。有时，他吃鱼。在晚上，他常常和家人一些吃晚饭。现在他比以前更健康了。
【参考范文】
Vince usually has breakfast at 6:30 at home. He liked to eat fast food before, but now he changes his diet. He has some milk, bread and eggs for breakfast. He has lunch at 12:00 at school. He often has a bowl of rice, some meat and vegetables. Sometimes he has some fish. He usually has supper with his family. He is healthier than before.
作文2：请根据下列所给的信息提示，以“How to keep healthy”为题写一篇70个词左右的短文。
提示：1. No sports, no life.生命在于运动。
2. An apple a day keeps the doctor away.一天一个苹果，医生远离我。
3. famous proverb 名言
【参考范文】
No sports, no life. Do you hear of that? That is to say, we should take more exercise every day. We can walk, run, swim, skate, or play ball games.
An apple a day keeps doctors away. It’s also a famous proverb. That means we should have good eating habits. Try to eat a lot of fruit and vegetables, eat less meat or junk food. Have enough sleep every night. If you do these, I think you can keep healthy.