Unit 2 Topic 1(Grade Nine)
Ⅰ、词组及用法
1、go ①去 ②不复存在,不见了,丢失,起作用
eg. The pen has gone.
Everything goes well.
2、pour…into… 把…倒入…
eg. Many factories pour waste water into the river.
3、waste
①n.浪费,损耗:It’s a waste of money.
②v.浪费:Don’t waste water.
③adj.废弃的,无用的:much waste water 许多废水
4、change
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①n.变化:Great changes have changed.
零钱:Here is your change.
②v.改变:Everything has changed.
5、pollute(v.)-pollution(n.)
air pollution 空气污染
The cars have polluted the air.
6、breathe(v.)――breath(n.)
breathe in “吸入”
breathe out “呼出”
hold one’s breath 屏住呼吸
take a (deep)death(深深地)吸一口气
7、in a bad mood 心情差
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8、can’t/couldn’t bear+名词/代词/动名词 无法忍受…
9、be harmful to=do harm to 对……有害
10、make too much noise 制造太多噪音
11、go deaf 变聋
lose one’s hearing 丧失听力
have hearing loss 听力丧失
12、quite a few=many
13、quite a little=much
14、no better than:同……一样坏,不比……做得好
This road is no better than that road.
15、around
①在…四周:There are many people around us.
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②在…各处:He often shows me around the school 1.
③大约:It’s about/around seven o’clock now.
16、high blood pressure 高血压
17、cause breathing problems 引起呼吸问题
18、all sorts/kinds of… 各种各样…
19、environmental problems 环境问题
20、in many ways 在许多方面
21、with the increase in population 随着人口增长
22、with the development of industry 随着工业发展
23、in the fields 在田地里
24、as well 也(句末)
25、work in strong light
强光下工作
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26、There be sb/sth doing sth 有某人/某物正在做某事
eg. There are some boys playing soccer on the playground.
There is a car collecting rubbish over there.
Ⅱ、语法
现在完成时与一般过去时的区别
1、结构
现在完成时:主语+have/has+动词过去分词…
一般过去时:主语+动词的过去式+…
2、定义
现在完成时表示过去发生的动作或存在的状态,持续到现在或对现在的影响。
一般过去时只表示“过去发生的动作或存在的状语”(与现在没有联系)
eg. I have opened the door.
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I opened the door half an hour ago.
My uncle has been in the army for two years.
My uncle was in the army two years ago.
3、连用的时间状语:
现在完成时常用到的时间状语:already,never,ever,just,yet,so far,since…,for+一段时间
in the past+一段时间等
一般过去时常用到的时间状语:yesterday,just now
last+时间段,一段时间+ago,at that time等
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