Unit 2 Saving the earth 知识点学案（含答案）

仁爱2019-2020学年九年级上册期中备考----unit2
Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems
一．课文重点
1. Kangkang, Jane, Maria and Michael are planning a picnic for Sunday.
(plan 词性及用法)
2. You can see bees and butterflies dancing. (单选)
(see sb. doing sth. 与see sb. do sth. 区别)
3. The flowers and grass have gone!
(词组 消失)
4. Look, there are several chemical factories pouring waste water into the stream.
(there is/ are sb. doing sth.) (词组 倾倒入……)
5. Everything has changed. (单选)
(every 做主语，谓动用单数)
6. It’s difficult for me to breathe!
(breathe 与breath 区别)
7. I’v got a pain in my throat.
(词组 ……疼痛)
8. How long have you been like this? (单选)
(How long +现完)
9. I’m always in a bad mood because I can’t bear the environment here.
(词组 坏心情) (bear n与v区别)
10. By the way, have you noticed the dead fish in the river?
(辩词“way”词组) (die/ died/ dead/ death)
11. Pollution has caused too many problems. (翻译)
(pollution/ pollute cause: v VS n too many/ too much/ much too)
12. Air pollution is harmful to people’s health.
(词组 be harmful to/ do harm to/ be bad for)
13. Many of the workers who print newspapers and books lose their hearing.
(定语从句) (词组 lose one’s hearing= hearing loss)
14. It’s reported that many teenagers in America can hear no better than 65-year-old people do.
(辨析 It’s said that/ It says that) (辨析 no better than/ no worse than)
15. In the fields, farmers use too many chemicals which destroy the soil.
(chemical VS chemistry)
16. Too much noise can cause high blood pressure as well.
(辨析 as well/ too/ either/ as well as)
实战演练
1. Water pollution is ________ to our health, and noise pollution does ________ to our health, too.
A. harmful; harm B. harm; harmful C. harm; harm D. harmful; harmful
2. It’s ________ China is short of water.
A. says B. say C. report D. reported
3. I have a bad cold, what’s worse, I got a pain ________ my throat.
A. in B. on C. at D. to
4. People ________ live near airport often have ________.
A. who; hear loss B. who; hearing loss
C. which; lose hear D. which; lose their hearing
5. You can’t eat ________ candy, you are ________ fat.
A. too many; too much B. much too; too many
C. too much; much too D. many too; too much
6. Lucy ________ her parents ________ traveling.
A. as well; like B. as well; likes C. and; likes D. or; likes
7. I often see Lucy ________ in the park. You can see her ________ at six o’clock.
A. dances; dancing B. dances; dance C. dancing; dances D. dance; dancing
8. He can’t ________ here. So he is always ________.
A. bear live; in a bad mood B. bear living; in a bad mood
C. bear lives; in a good mood D. bears living; in good mood
9. ---________ have you had the pen? ---Two days.
A. How often B. How long C. How soon D. What day
10. I felt difficult to ________! So I had to take a deep ________.
A. breathed; breath B. breathe; breathe C. breath; breathe D. breathe; breath
11. I can draw ________ Lucy, I means I draw as badly as Lucy.
A. as good as B. no better than C. no worse than D. as bad as
12. Not everyone in our class ________ a computer.
A. have B. had C. has D. like
13. I ________ go to Beijing for a trip. ________, what’s your ________?
A. plan to; By the way; plan B. plan; On the way; plans
C. planed; In the way; plans D. planned; On the way; plan
14. There are many ________ fish, they have ________ for at least two days.
A. dead; dies B. dead; been dead C. died; been dead D. died; dead
15. Look! There are several chemical factories ________ waster gas ________ the air.
A. pour; into B. pouring; in C. pours; into D. pouring; into
Topic 2 All these problems are very serious
The wind outside is blowing strongly.
（词组）
The wind is so strong!
（strong/ strongly）
While I was walking down the street just now, I couldn’t see anything.
（时间状语从句） （不定代词）
Cut down too many trees
（固定搭配）
As a result, a lot of rich land has changed into desert.
（固定搭配） （固定搭配）
How can that affect the weather?
（affect/ effect）
Trees can stop the wind from blowing the earth away.
（固定搭配）
And a lot of water can be saved by forests.
（被动语态）
Cutting down trees is harmful to human beings, animals and plants.
（动名词做主语）（be harmful to/ do harm to）
We still need to do something to protect the environment. （翻译）
It says that china has become the world’s largest producer and user of coal.
（单词变形：人 +er /or /ist /ian /n）
But the government is doing something useful to protect the environment. （翻译）
None of us likes pollution.
（不定代词做主语 +单数谓语）
We shouldn’t leave rubbish here and there.
（固定搭配）
Don’t spit anywhere in public. Don’t walk on grass or pick flowers. Everyone should care for wild animals and plant more trees. （作文素材）
We should do everything we can to protect the environment.
（句型）
I think we should make rules to changes the situation.
（固定搭配 制定规则）
Perhaps it will be hard for us to obey the rules in the beginning.
（obey / break the rules）（in the beginning= at first = first of all）
We humans have lived on the earth for only 35000 years, but during this period, we have changed our planet a lot in many ways. （固定搭配）
When it rains or when the wind blows, the earth is taken away.
（被动语态 固定搭配）
In big cities, cars and buses have polluted the air.
（单词拼写）
health problems （词组 健康问题）
As a result, many rivers and lakes are now dead
（单词变形: 死 death/ die of, from, out / dying）
CO2 in the air has increased a lot.
（in the air/ in the sky/ in the open air）
The heat from the sun can’t escape so the temperature is rising. （翻译）
（固定搭配） （单词拼写）
the greenhouse effect （词组 温室效应）
It causes the level of the oceans to rise and the climate of the earth to change.
（音标） （rise/ raise）
refer to （词组 涉及到…）
All these problems are very serious, so we must do something now. （翻译）
There is plenty of water in the sea.
（词组：许多 a lot of/ lots of/ a number of）
The shortage of water
（shortage/ short）
How can we avoid a serious water shortage?
（搭配 avoid doing sth.）
Scientists have made some progress in this field.
（固定搭配 在这个领域）
Some large cities are reusing their water.
（re前缀表重复）
But people’s need for water is increasing day by day.
（固定搭配 一天天）
We still don’t have enough water.
（enough + n. & adj. + enough）
Although the world is hungry, it is even thirstier.
（程度副词 甚至）
While nearly 3/4 of the earth is covered with water, we are still short of drinking water.
（固定搭配） （固定搭配）
use it for （固定搭配）
Pass laws against water pollution.
（固定搭配 通过法律）
实战演练
1. the wind outside is blowing , all students come to school on time.
A. Although, strongly B. Because, strongly
C. Although, strong D. Because, strong
2. he was singing in the living room, somebody knocked the door.
A. When, on B. When, at C. While, at D. While, on
3. China very rapidly in recent years. , China becomes second super country after America.
A. has developed, luckily B. has developed, as a result
C. developed, however D. developed, so
4. Cutting down trees is harmful the whole world. We should do something the environment.
A. for, to protect B. of, protecting C. to, to protect D. to, protecting
5. The world is thirsty a lot of water must in our daily life.
A. too, to, save B. so, that, save C. such, that, saved D. so, that, be saved
6. people should help each other in their daily life, and the government should also do
useful the environment.
A. The whole, anything, creating B. The all, something, to create
C. All the, something, to create D. Whole the, something, creating
7. --- How many people are there in your classroom now?
--- . all the students home already.
A. No one, have gone to B. None, have been to
C. None, have gone D. No one, have been
8. He because of the rules of traffic yesterday.
A. was punished, broke B. punished, breaking
C. punished, broke D. was punished, breaking
9. My grandfather since at least10 years ago. We were all pity because he cancer.
A. has been dead, died of B. has died, died from
C. has been dead, died from D. has died, died of
10. I want to become a bird flying , because I can breathe the fresh air .
A. in the air, in the sky B. in the sky, in the air
C. on the air, in the sky D. on the sky, in the air
11. It causes the level of the oceans and climate the earth to change.
A. to rise, of B. rising, for C. rising, of D. to rise, for
12. The number of students in our school 6000. Look! A number of students on the playground.
A. is, are playing B. are, is playing
C. has been, were playing D. have been, was playing
13. The world will become even , we try our best to protect the environment.
A. worse, though B. better, unless C. worse, unless D. better, although
14. The man the field called Yuan Longping. He is one of the most famous scientists his field.
A. in, on B. on, in C. from, on D. from, in
15. nearly 3/4 of the earth water, we are still short drinking water.
A. Although, is covered of, in B. When, is covered with, in
C. When, is covered from, of D. Although, is covered with, of
16. Nowadays, our government passes laws the water pollution, our country will become more and more beautiful.
A. to, though B. against, so C. to, if D. against, before
Topic 3 What can we do at home to protect the environment?
1. We all know that you’re working for an organization that protects the environment.
(词组 为……工作) (定语从句)
2. My main job is to help spread the message about protecting the environment.
(单选 不定式短语 作表语) (介词+ v.ing)
3. We should use both sides of paper and reuse plastic bags. (单选)
(辨析 each side of … )
4. Recycling can protect the environment, and it can save money, too. (单选)
(动名词)
Some things we have done are good for the earth while some are bad.
We should do everything to protect it, or we’ll be punished and lose our home.
People produce power from coal, but it is very dirty and causes acid rain.
They will never run out so they are called renewable sources.
(词组 用尽)
5. We encourage students to collect waste paper and soft drink cans. (翻译)
(词组 鼓励某人做某事)
6. We sort them so that they can be recycled.
(以便 in order to/ in order that)
7. Nodding the head means agreement. Shaking the head means disagreement. (翻译)
8. You ought to shut off the electricity when you leave a room. (翻译)
(词组 应该) (词组 关上)
9. You’d better walk or ride a bike instead of taking a bus or taxi if you travel a short distance. (翻译)
(词组 代替，而不是) (短途旅行)
10. Easier said than done. Actions speak louder than words. (单选)
11. After all, we have only one earth. (翻译)
(词组 毕竟)
12. However，nuclear power can be very dangerous.
(单词拼写)
13. Its key disadvantage is that the process requires a long time and the cost is high.
(advantage) (拼写、中文意思) (high/ low)
14. It can not only protect the environment but also save energy.
(就近原则 neither … nor… / either… or .. / there be … / both … and … )
15. It takes people just 7 minutes to go to the airport 30 km away.
(四大“花费”)
16. The train can reach a top speed of 431 km per hour.
(固定搭配 reach a speed of + 具体速度)
17. remove carbon dioxide from the air
(词组 从……中移出)
18. Sea waves are used for producing electricity.
(词组 被用于…… 介词 + v.ing)
19. bite on their legs, arms and faces
(bit-bitten)
20. It’s a pleasure. With pleasure (单选)
实战演练
1. There once were many green trees and grass on sides of the river.
A. either B. both C. each D. all
2. A lot of trees and flowers are on side of the river and the number of them is growing .
A. both, more B. each, more C. both, larger D. each, larger
3. I a company which sells cars.
A. play for B. look for C. pay for D. work for
4. The only thing that I want to do is a rest.
A. having B. to have C. had D. has
5. Our food . So we’d better go home to fetch some．
A. has run out B. had run out C. is run out D. has run out of
6. Mom always encourage me more exercise in my free time.
A. doing B. do C. to do D. did
7. He is a nice person he is always serious.
A. and B. though C. or D. so
8. It’s a nice house it hasn’t got a garden.
A. and B. but C. or D. so
9. --- Could you please help my sister with her English?
--- .
--- Thanks a lot, Mr. Li.
--- .
A. It’s a pleasure; It’s very kind of you B. Way to go; Never mind.
C. With pleasure; It’s a pleasure D. It’s a pleasure; With pleasure
10. Students to speak loudly in the reading room.
A. ought B. shouldn’t C. don’t ought D. ought not
11. --- I to write to say thank you?
--- Yes, I think you .
A. Ought; ought B. May; may C. Need; need D. Must; must
12. --- Sam, what can I do to get up early?
--- Set the alarm at 6:00 am, you’ll make it.
A. or B. but C. and D. so
13. The army were traveling a speed of forty miles per hour.
A. in B. with C. at D. /
14. Please the TV because the baby is sleeping.
A. shut off B. turn on C. cut down D. cut up
15. --- My ink is . May I use yours?
--- Certainly.
A. run out B. runs away C. running out D. running away
16. His actions made me angry say a word.
A. so; that B. enough; to C. too; not D. too; to
17. These stamps are very beautiful and they are used for letters.
A. send B. sending C. sent D. sends
18. Please answer my question in a loud voice all the class can hear.
A. so that B. such that C. however D. though
19. the students are good at English. Some of them can’t even write out the 26 English letters.
A. All B. None of C. Not all D. Neither of
20. During the Spring Festival, the heavy snow many people from home.
A. kept; going B. stopped; going C. made; go D. would like; to go
21. The cost of medical care in the USA is very .
A. large B. high C. expensive D. cheap
22. It him about thirty minutes to get from his home to the school.
A. pays B. costs C. takes D. spends
23. One of the cleaners ___________ (remove) the snow from 5 to 7 yesterday morning.
24. What should you do if your friend is ___________ by a snake? (bite)
25. 点头意思是同意，摇头意思是不同意。
________________________________________________________________________________
26. ___________ said than done. Actions speak ___________ than words.
27. 回收利用不仅能够保护环境，还能省钱。
_________________________________________________________________________________
二．词汇
A.音标与单词拼写
1. In common with many countries, Britain has serious [?n?va?r?n?mentl] problems.
2. [?:l???u] many Chinese students say that their knowledge of English grammar is good, most would?admit (承认) that their spoken English is poor.?
3. For a moment he was [k?m?pli:tli] knocked over by the news of his friend’s death.
4. He is in a difficult [?s?t?u?e??n], so you should send him a message and give him some advice.
5. [p??h?ps] you have heard lot about the Internet but what is it?
6. What's more, [?k?ses?v] or severe training can do harm to our health.
7. There are ____________ [?sevr?l] English teacher in our school.
8. The villagers have ____________ [d?'str??] the environment there.
9. They not only ____________ [p?'lu:t] the air in cities, but also make them crowded.
10. She is so ____________ [??:fl] that I don’t like her.
11. Don’t ____________ [d?'st?:b] me, I am preparing for my exam.
12. I’m happy today, but I was ____________ [?n?pleznt] yesterday.
13. ['evr?b?d?] should not break the rules in the daily life, or they must be punished.
14. Because ?['n??l?] 3/4 of our classmates have gone to America, we don’t have enough players to take part in the sports meeting this Saturday.
15. Tom, don’t forget to shut off all the [?'l?k'tr?s?ti] when you go out.
16. With the development of science and [tek'n?l?d??], our country has become one of the strongest countries all over the world.
17. One of their [,d?s?d'v?nt?d?s] is short of money, it’s the reason why they fail in this competition, though they have so many advantages.
18. We [r?'kwa??] more time to arrive at the bus station because of the heavy traffic.
B.单词拓展
bad adj. → ____________ adv. → ____________(比较级) → ____________(最高级)
→ even ____________
behavior n. → ____________ (v.) → ____________(好行为)/ ____________(不好的行为)
punish v. → ____________(过去式)
→ (任何违反规定的人都要被惩罚。)
directly adv. → ____________ (n.) → ____________ (adj.)
rise v. → ____________ (过去式) → ____________ (过去分词)
shortage n. →____________ (adj.) → (缺乏 两种写法)

avoid v. → ____________ (过去式) → (避免做某事)
nearly adv. nearby almost hardly
protection n. → ____________ (v.) → (保护环境 两种写法)

German n.→ ____________(复数) →____________(德国)
history n→____________(adj.)
marry v.→____________(n.)
allow v.→____________(过去式) →____________(过去分词)
→sb. be allowed to do sth.
weight n.→____________(v.) →____________(现在分词)
→____________(过去式) →____________(过去分词)
dry v.→____________(过去式) →____________(过去分词)
v. 弄干 dry your hair adj. a dry season
agree v.→____________(n.肯定) →____________(n.否定)
agree to do sth. agree with sth.
act v.→____________(n.) take actions
place --- replace
move ---____________ newable---____________ use---____________
pain (n.) → (adj.)
bear (n./ v.) → (过去式) → (过去分词)
un前缀 把下列词变成否定
comfortable → pleasant → tidy →
breath (n.) → (v.) → (呼吸问题)
harmful (adj.) → (v.) → (对……有害 两种)
hearing (n.) → (v.) → (听力丧失)
→ (丧失听力)
including (prep.) → (v.)
create (v.) → (n.) → (adj.)
spit (v.) → (过去式) → (过去分词)
参考答案
Topic 1
1-5: ADABC 6-10: BDBBD 11-15: BCABD
Topic 2
1-5 ACBCD 6-10 CCDAB 11-16 AACBDB
Topic 3
1-5: BDDBA 6-10: CBBCD 11-15: ACCAA 16-20: DBACB 21-22: BC
23. was removing 24. bitten
25. Nodding the head means agreement, shaking the head means disagreement.
26. Easier; louder 27. It can not only protect the environment but also save energy.
词汇
A.音标
1. environmental 2. Although 3. completely 4. situation 5. perhaps
6. excessive 7. several 8. destroyed 9. pollute 10. awful
11. disturb 12. unpleasant 13. everybody 14. nearly 15. electricity 16. technology 17. disadvantages 18. require
B. 单词拓展
1. badly; worse; worst; worse 2. behave; good behavior; bad behavior
3. punished; Anyone who breaks the rules will be punished. 4. director; direct
5. rose; risen 6. short; be short of; be the shortage of
7. avoided; avoid doing sth. 8. protect; protect the environment; environmental protection
9. Germans; Germany 10. historical 11. marriage
12. allowed; allowed 13. weigh; weighing; weighed; weighed
14. dried; dried 15. agreement; disagreement
16. actor; action 17. remove; renewable; reuse
18. painful 19. bore; borne
20. uncomfortable; unpleasant; untidy; 21. breath; breathing problems
22. harm; do harm to; be harmful to 22. hear; hearing loss; lose one’s hearing
23. include 24. creation; creative 25. spit; spit/ spat; spat