人教版八年级上册一单元英语知识点

Unit1
1.疑问词how的用法
(1) 用什么手段,方法/交通工具
How did he do it?/ I don’t know how to swim.
How do you come toschool?
(2) 情况如何（指身体健康状况） How are you?
(3) how many,how much表示“多少”
how many后接可数名词复数,how much接不可数名词.
(4) how often是对动作发生的“次数”提问,询问的是频率“多久一次”
(5) How old...询问年龄 How old areyou?I am five.
(6) How about…?……如何?……怎么样?How about going to the movies?
2.time表示不可数名词,意为“时间”.What time is it?
表示可数名词,意为“次数,倍数”--------注意“次数”的表达方法
一次 once,两次 twice,三次或三次以上用基数词加上times：three times、five times、one hundred times.
表示“……几次”的表达方法是：once a day/ a week/ a month/ a year twice a day/ a week/ a month/ a year
3.How often do you shop?/How often do you exercise?--------exercise v/n shop v/ n
1)He often exercises on weekends.We often do / take exercise (做运动)on weekends.
2)We often shop on weekends.There are many shops in theneighborhood.
4.As for homework,most students do homework every day.------as for意为“就……而论”,“至于”
5.want to do sth.想要做某事 want sb.to do sth.想要某人干某事
ask sb.to do sth.叫某人做某事 tell sb.to do sth.告诉某人去做某事 help sb.(to) do sth.帮助某人做某事
6.be good for...表示“对……有益（有好处）” be bad for...对……有害/无益
It's good for us to do more reading.多读书对我们有好处.
7.When + 从句 当……时候 eg.I often stay at home when it israiny.
8.try todo sth.尽量/尽力做某事 eg.I try to eat a lot ofvegetables.
9.look after 照顾
10.bethe same as … / be different from … 与……一样/与……不同
She looks the same as hersister.她看起来跟她的妹妹很像.
This book is differentfrom that one.这本书跟那本书不一样.
11. kind of = a little ‚a kind of 一种 eg.I think I’m kindof unhealthy.我想我有点不健康.
12.maybe (adv.) = perhaps 也许,可能
Maybe he knows the answer.
13.although = though 虽然
Although he’s ill,he goes to school ontime.
14.A lot of vegetables help you to keep in good health.
A lot of = lots of = many / much 许多
keep in good health =keep healthy = stay healthy
keep + 形容词 表保持某种状态eg.We must keep ourclassroom clean.
15.(1) sometime是副词,意为“在某个时候”,“某时”eg.Will you come again sometime next week?
(2) some time是名词词组,意为“一段时间”,做时间状语用
(3) some times是名词词组,意为“几次,几倍”
（4）sometimes 是频度副词,意为“有时”eg.He sometimes goes skateboarding on weekends.
16.That sounds interesting.
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.
It tastes good.这味道好.The music sounds very sweet.这音乐听起来很入耳.
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