八年级英语上册第一单元知识点
一．重要短语
1．how long，how soon，how often，how far，how much, how many 的区别
how long (时间持续)多长 (某物) 多长
---How long did you sleep last night ? --- For 8 hours .
how soon (从现在起还要)多久
--- How soon will he be back ? --- In a week .
how often (某个动作)隔多久一次
---How often do you go to the cinema ? ---- Once a month .
how far (某地) 多远
--- How far is the store from here ? --- About 500 meters .
how much 多少钱
----How much is the shirt ? --- 150 Yuan .
how many 多少, 后接可数名词复数
---- how many apples do you have ?
2．on weekends == at weekends 在周末
3．go to the movies ==go to a movie ==go to see a movie
=== go to the cinema == go to see a film去看电影
go to the theater 去看戏 go to the concert 去听音乐会
4．surf the Internet 上网冲浪
She likes surfing the Internet very much .
5. as for 至于、、、、、、 ，关于、、、、、、， 就、、、、、、而言
As for English , I like it very much .
We all came , but as for him , he didn’t come .
6.about ( 1 ) 大约 She is about 20 years old .
（2 ）关于 I have a book about birds .
（3 ）在、、、、、、周围， 在、、、、、、附近 I lost my pen about the classroom .
7. be good for 对、、、、、、有好处 Vegetables and fruit are good for health .
be bad for 对、、、、、、有坏处 Reading in the sun is bad for eyes .
be good to 对…… 好 She is very good to us .
be bad to 对……healthylifestyle 不好 The boss is bad to his workers .
be good at sth=== do well in sth 在某方面好, 擅长于某方面
She is good at English and Chinese .
== She does well in English and Chinese .
be good at doing sth== do well in doing sth在某方面好, 擅长于做某事
They are good at playing basketball .
They do well in playing basketball .\
be good with 和 …… 相处得好 Are you good with children ?
8. come home from school \ work 放学 \下班回家
9. look after == take care of == care for 照顾，照看
He looks after his grandfather every day .
==He takes care of his grandfather every day .
==He cares for his grandfather every day .
10. keep in good health=== keep healthy 保持健康
11. health 名词，“ 健康 ”
healthy 形容词， “ 健康的 ”， 作定语或表语 。
The old man is in good health .
== The old man is very healthy .
I have a healthy lifestyle .
12. sometimes , some times , sometime , some time 的区别
(1) sometimes 有时候, 偶尔, 用于一般现在时和一般过去时
He was sometimes late for school .
(2) some times 几次, 几倍 表示次数或倍数
She came home some times .
(3) sometime 某时, 用于一般现在时和一般过去时
He came here sometime .
( 4) some time 一段时间, 用于多种时态
He will stay there for some time .
13. every day 与 everyday 的区别
(1) every day “ 每天 ” , 时间状语 , 表示动作发生的频率
(2) everyday “ 日常的, 平常的” , 形容词作定语.
I do sports every day .
He speaks everyday English every day .
14. exercise (1) 不可数名词, “ 锻炼, 运动 ”
A lot of exercise is good for your health .
You need to do more exercise to keep health .
(2 ) 可数名词 , “ 练习, （具体的）操 ”
We do morning exercises ( 早操 ) every day .
Eye exercises ( 眼保操 ) are important to students .
Students always have a lot of exercises to do .
(3 ) 动词 , “ 锻炼, 运动 ” How often do you exercise
My father exercises every day .
15. try to do sth 努力做某事 I try to answer the question .
try doing sth 试着做某事 He is trying swimming across the river .
try out 试验 If you have a good idea , please try it out .
try on 试穿 Can I try on these shoes ?
try one’s best to do sth尽某人最大努力做某事
We should try our best to learn English well .
have a try 试一试 Let me have a try .
16. help sb. do sth . \ help sb to do sth \ help sb. with doing sth .
帮助某人做某事
He often helps me ( to ) learn English .
He often helps me with learning English .
Help sb with sth帮助某人做某事
He often helps his mother with housework .
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