Unit 13 We’re trying to save the earth!
重点单词：
Littler, bottom, fisherman, coal, ugly, advantage, cost, wooden, plastic, takeaway, cruel, harmful, industry, law, scientific, afford, reusable, recycle, gate, bottle, president,work, metal
重点短语:
be full of 充满
close down 关闭
play a part in 扮演角色
clean up 打扫卫生
cut down 减少
instead of 代替
make a difference 起作用，有影响
used to 过去常……
lead to 通往……
hear of 听说
be harmful to …对……有害
the food chain 食物链
at the top of 在……顶部或顶端
turn off 关掉
take part in 参加
pay for 付费；付出代价
take action 采取行动
throw away 扔掉；抛弃
put sth. to good use 好好利用某物
pull…down 拆下；摧毁
turn upside down 上下颠倒；倒转
set up 建起，成立
bring sb. Back to 使想起
be known for 因……而闻名
重点句式：
1. It used to be so clean.
它过去是那么干净。
2. Everyone in this town should play a part in cleaning it up.
我们镇上的每个人都应该尽一份力把这条河清理干净。
3. The air has become really polluted around here.
这附近的空气被严重污染了。
4. To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染， 我们应该乘公汽或地铁，而不要开车。
5. It doesn’t cost anything.
它不耗费任何东西。
6. But in fact, around 70 millon sharks are caught and traded in this industry every year.
但事实上，每年大约七千万条鲨鱼被抓来用作商业交易。
7. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
有些种类的鲨鱼数量在过去的二三十年里，下降了百分之九十以上。
8. So far, no scientific studies have shown that shark fins are good for health, so why eat them?
到目前为止，没有科学研究证明显示鱼翅对健康有益， 所以为什么要吃呢？
9. Recycling paper is really easy.
回收再利用纸很容易。
10.But it’s hard to stop riding in cars.
但是停止开小汽车是很难的。
11.We shouldn’t use paper napkins .
我们不该用餐巾纸。
12.Turn off the lights when you leave a room.
当你离开房间时关掉灯。
13.Have you ever thought about how these things can actually be put to good use？ 你曾经考虑过怎样能充分利用这些东西吗？
14.Amy isn’t the only one who is good at recycling.
艾米并不是唯一善于回收利用的人
15.She has been doing this for a few years now.
她做这事已经有好几年了。
16.Not only can the art bring happiness to others，but it also shows that even cold，hard iron can be brought back to life with a little creativity.
艺术不仅能带给别人快乐，而且也说明了只需要一点创造力，即使是冰冷、坚硬的铁也可以产生活力。
巧记歌诀：
1.“花费”用法口诀
花费四词各家聚，认准人物谁主语；
in，on就跟spend去，for在pay后不客气；
cost物前人后移，It takes…to do在一起。
1. 被动语态
宾变主，主变宾，by短语后面跟，
谓语动词变被动，be后“过分”来使用。
巩固提升：
一、单项填空
( )1.I don't think you've been to Disneyland, ________？
A．aren't you B．haven't you
C．do you D．have you
( )2.The villager built the bridge ________stones last year.
A．out of B．out C．to D．for
( )3.My brother watched the football match instead of ________ his homework.
A．doing B．do
C．did D．does
( )4.—Do you know the movie Harry Potter?
—Yes.I________ it twice.It's funny.
A．saw B．see
C．have seen D．will see
( )5.More natural protection areas should ________ in the future.
A．set up B．to set up
C．be set up D．setting up
( )6.—Do you like playing computer games?
—No, but I ________.
A．used to B．didn't
C．do D．don't
( )7.I have never________ the strange animal before.
A．heard from B．listened
C．listened to D.heard of
( )8.—Miss Liu, when did you come here?
—In 20xx.I________ here for two years.
A．have been to B．have gone to
C．have come D．have been
( )9.Lots of food and water________ to Ya'an, Sichuan Province immediately after the earthquake happened.
A．were sent B．are sent
C．send D．sent
( )10.The children were hungry and the salad was quickly________ up.
A．eating B．ate C．eaten D．eat
( )11.Look, so many passengers________ with their smart phones on the underground.
A．played B．will play
C．are playing D．have played
( )12.Great changes________ in Daqing since the 1990s.
A．took place
B．were taken place
C．have taken place
D．have been taken place
( )13.—How much does the car________？
—Oh, that's not too dear.It's only 100,000 yuan.
A．spend B．cost C．take D．pay
( )14.—Have you________ the school sports meeting?
—Yes, I have.
A．take part B．taken part
C．taken part in D．took part in
( )15.—What________ I do?
—You'll________ study from now on if you want to go to college.
A．can; may B．should; can
C．should; have to D．may; could
( )16.________ he ________ on well with his friends this term?
A．Did; get B．Does; get
C．is; gotten D．Is; getting
( )17.Computers ________ process difficult problems very quickly.
A．can B．must
C．should D．need
( )18.Our teacher told us waste bottles should be________ good use.
A．put B．put to
C．to put D．puts
( )19.—Is Tom coming by train?
—He________.But he________ not.He likes driving his car.
A．can; must B．may; can
C．must; may D．should; may
( )20.—John, your room is really in a mess.It needs________.
—Sorry, Mum.I'll do it at once.
A．cleans B．cleaned
C．to clean D．to be cleaned
二、完形填空
Nancy's grandma lived in a big old house in New York.Nancy and her parents went to see her each summer.Nancy __1__ to see Grandma and bake (烘烤) with her.She liked to play cards with her, too.This summer, however, Grandma did not seem __2__.She seemed to be worried about something.
“What's wrong with Grandma？” Nancy asked her mom.
“The __3__ pollution is bothering (使烦恼) her，” Mom said.
“Do you __4__ the noise from all those cars？” Nancy asked.
“Yes，” Mom said.“When Grandma moved here many years ago, there wasn't such a big __5__ here.Now there is a big road that is used to go to work easily in the city.Big trucks deliver (运载) food all over, too, by __6__ this road.They make so much noise.The noise pollution really bothers Grandma.”
“I know __7__ water pollution and air pollution are.I learned about them in school, but what is noise pollution？” Nancy asked.
“Pollution is __8__ that is bad for you，” Mom said.“Noise pollution can influence someone's __9__.Grandma's blood pressure goes up because of too much noise.She also has trouble __10__ with all the traffic at night.Grandma's hearing has been hurt by the noise, too.”
( )1.A.loved B．hated C．wanted D．feared