九年级英语上册《第二单元》知识点总结
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福建省南平市光泽二中九年级英语上册《第二单元》知识点总结
Topic 1
短语：
1.see sb do/doing sth
2.two days later
3.my goodness
4.smell terrible
5.chemical factories
6.pour…into
7.air/soil/water/noise /light
8.do harm to
9.pollution
10.breathing problems
11.do st h. Useful
12.influence
13.it is+adj+for/of sb to do
14.in a bad mood
15.write to sb
16.see a doctor
17.had better
18.poan to do
19.join the army
20.rock music
21.midnight
22.not all /both
23.in noisy conditio ns
24.quite a few
25.hearing loss
26.it is said /reported that
27.in pubic
28.enviornmental problems
29.no better than
30.be bad ofr
31.with the increase of population
32.put…into
33.high blood pressure
34.in strong light
35.greener people
36.manage to do
二、语法要点：
现在完成时与for或since连用时动词要用延续动词，如果是非延续动词可以用下面的办法来解决：1、用have/has been +adj/adv/prep
He died three years ago.
He has been dead ofr three years/since three years ago.
The door was opened two hours ago.
The door has been open for tow hours /since two hours ago.
He left the room yesterday.
He has been away for one day/since yesterday.
He came to /arrived at /reached /got to Xinhe Middle School t hree years ago.
He has been in Xinhe Middle Shool for three years/since three years ago. He joined the army 3 years ago.
He has been in the army for 3 years/since 3 years ago.
2、找一个意思相近的延续动词来表达。
I bought the book the day before yesterday.
I have had the book ofr two days /since two days ago.
He borrowed the book two weeks ago.
He has kept the book for two weeks /since two weeks ago.
1、谈谈你家乡过去和现在环境的变化（P25）
2、谈谈你家乡有哪些污染以及它们的危害。
Topic 2
一、短语：
1.as a result
2.protet t he environment
3.as we know
4.here and there
5.step on the grass
6.care ofr
7.even worse
8.none of
9.in the begginning
10.do one’s best
11.follow the rules
12.better and better
13.day by day
14.in danger of
15.I’m sor ry to hear that
16.cut down
17.change into
18.stop…from
19.prevent …from
20.h uman beings
21.althouth
e into being
23.wash the earth away
24.in the northeast of
25.cut off
26.the ozone layer
27.carbon dioxide
28.during this period
lons of
30.be helpful to
31.escape from
32.the greenhouse effect