2014八年级英语上册第二单元知识点归纳

2014八年级英语上册第二单元知识点归纳
Unit2 How often do you exercise
一、重点短语
such as例如；诸如junk food n.垃圾食品；无营养食品more than超过；多于；不仅仅；非常less than不到；少于help with housework 帮助做家务on weekends 在周末how often 多久一次hardly ever 几乎从不once a week 每周一次twice a month 每月两次every day 每天be free 有空
go to the movies 去看电影use the Internet 用互联网swing dance 摇摆舞play tennis 打网球
stay up late 熬夜；睡得很晚go to bed early 早点睡觉have dance and piano lessons 上舞蹈课和钢琴课at least 至少play sports 进行体育活动be good for 对……有好处go camping 去野营not…at all 一点儿也不……in one’s free time 在某人的业余时间morn than 多于；超过the most popular 最受欢迎的old habits die hard 积习难改go to the dentist 去看牙医less than 少于
help sb. with sth. 帮助某人做某事by doing sth.通过做某事How about…? ......怎么样？want sb. to do sth. 想让某人做某事How many+可数名词复数+一般疑问句？……有多少……? spend time with sb. 和某人一起度过时光
It’s+ adj.+ to do sth. 做某事的……的。

ask sb. about sth. 向某人询问某事
What’s your favorite……? 你最喜爱的……是什么？
the best way to do sth. 做某事的最好方式
二、重点语法
(一) 重点句型
1.-----What do you usually do on weekends?
-----I often go to the movies.
2. hardly ever 几乎从不相当于hardly, ever起强调作用。

3. ----How often do you watch TV? ----Twice a week.
4. What's your favorite program? = What program do you like best? 你最喜欢的节目是什么？
5. How come?怎么回事？怎么会？表示某件事情很奇怪，有点想不通；可单独使用，也可引导一个问句。

相当于疑问词why。

但how come 开头的特殊疑问句使用的仍是陈述语序。

6. I go to the movies maybe once a month. 我也许一个月去看一次电影。

7. Last month we asked our students about their free time activities. ask ab. about sth. 询问某人某事
8. We all know that many students often go online, but we were surprised that ninety percent of them use the Internet every day. The other ten percent use it at least three or four times a week. 我们都知道许多学生经常上网，但是让我们感到惊讶的是90%的学生每天都上网，而另外10%的学生一周至少上网达三至四次。

9. Most students use it for fun and not for homework.
大多数学生上网是为了娱乐而不是为了写家庭作业。

10. The answers to our questions about watching television were also interesting.关于看电视的调查结果也十分的有趣。

11. Although many students like to watch sports, game shows are the most popular.
尽管许多学生喜欢看体育节目，但是娱乐节目是最流行的。

12. It is good to relax by using the Internet of watching game shows, but we think the best way to relax is through exercise. 通过使用因特网看娱乐节目来放松很不错，但是我们认为最好的放松方式是通过锻炼来放松。

13. It is healthy for the mind and the body. 这有益于身心健康。

stay healthy = keep healthy = keep in good health 保持健康
14. Old habits die hard. 旧习难改。

(二)语法知识: 频度副词
1. 频度副词的含义
(1) 表示次数、频率的副词称为频度副词。

常用的频度副词按高低依次为
always > usually > sometimes > seldom > hadly ever > never
100% 80% 60% 30% 10% 0%
(2) 表示具体的频率、次数时，一次用once，两次用twice，三次或三次以上用“基数词+times”表示: three times, four times, six times
2. 频度副词在句中的位置
(1 )频度副词一般在实意动词之前，be 动词、助动词或情态动词之后
E.g. We never eat junk food.
Lucy is sometimes very busy.
I can hardly say a word.
(2)有些频度副词也可位于句首，但表示不同含义sometimes 常位于句首，和位于句中区别不大。

E.g. Sometimes Jack plays computer games.
often 用于句首时，通常表示强调，且其前一般有quite，very 修饰
E.g.Very often he goes online.
Usually 也可位于句首，其前不用修饰语。

E.g. Usually my father goes up early.
Always 一般不用于句首，但可以用在祈使句中。

E.g. Always remember this.
3. 对频度副词提问时，用how often
E.g. ---How often do you go to the movies? ---Once a month。