Unit 13 We're trying to save the earth!固定短语具体用法讲义

人教版英语九年级13单元固定短语具体用法讲义
一、这些短语的具体用法
1. cut down：减少；砍倒
We need to cut down on our spending.（我们需要减少开支。）
They cut down the trees to make room for the new building.（他们砍倒了树木为新建筑腾出空间。）
2. be good for：对……有益
Eating fruits is good for your health.（吃水果对你的健康有益。）
Exercising regularly is good for mental wellbeing.（定期锻炼对心理健康有益。）
3. make a difference：起作用
Every little effort can make a difference.（每一点小小的努力都能起作用。）
Her positive attitude made a big difference in her work.（她积极的态度在工作中产生了很大的影响。）
4. hear of：听说
I've heard of that place before.（我以前听说过那个地方。）
Have you ever heard of this author （你曾经听说过这位作者吗？）
5. cut off：割掉
The electricity was cut off due to the storm.（由于暴风雨，电力被切断了。）
She cut off her hair and donated it to charity.（她剪掉了自己的头发并捐赠给了慈善机构。）
6. be harmful to：对……有害
Smoking is harmful to your lungs.（吸烟对你的肺部有害。）
Pollution is harmful to the environment.（污染对环境有害。）
7. worse and worse：越来越糟
The situation is getting worse and worse.（情况越来越糟。）
The weather is becoming worse and worse these days.（这些天天气越来越糟。）
8. take part in：参加
I want to take part in the sports meeting.（我想参加运动会。）
He always takes an active part in school activities.（他总是积极参加学校活动。）
9. not…any longer：不再
She doesn't live here any longer.（她不再住在这里了。）
I can't wait any longer.（我不能再等了。）
10. begin with：以……开始
The speech began with a joke.（演讲以一个笑话开始。）
Let's begin with the first chapter.（让我们从第一章开始。）
11. turn off：关掉
Please turn off the lights when you leave.（离开时请关掉灯。）
Remember to turn off the TV before going to bed.（记得睡觉前关掉电视。）
12. pay for：付费；付出代价；赔偿
You have to pay for the meal.（你得付这顿饭的钱。）
He paid for his mistake with his job.（他为他的错误付出了失去工作的代价。）
13. add up：加起来
Add up all the numbers and you'll get the total.（把所有的数字加起来，你就会得到总数。）
The costs added up to a lot of money.（费用加起来很多钱。）
14. take action：采取行动
We need to take action to solve the problem.（我们需要采取行动来解决这个问题。）
It's time to take action and make a change.（是时候采取行动做出改变了。）
15. throw away：扔掉；抛弃
Don't throw away useful things.（不要扔掉有用的东西。）
She threw away the letter without reading it.（她没看信就扔掉了。）
16. put sth. to good use：好好利用某物
We should put this opportunity to good use.（我们应该好好利用这个机会。）
You can put your skills to good use in this project.（你可以在这个项目中充分利用你的技能。）
17. pull…down：拆下；摧毁
They are planning to pull down the old building.（他们计划拆除这座旧建筑。）
The police pulled down the barriers.（警察拆除了障碍物。）
18. upside down：上下颠倒；倒转
The picture is hanging upside down.（这幅画挂颠倒了。）
The room was turned upside down.（房间被弄得乱七八糟。）
19. set up：建立
They set up a new company.（他们建立了一家新公司。）
A fund was set up to help the poor.（设立了一个基金来帮助穷人。）
20. look like：看起来像
He looks like his father.（他看起来像他的父亲。）
The cloud looks like a sheep.（那朵云看起来像一只羊。）
21. bring back：恢复；使想起
This song brings back memories.（这首歌勾起了回忆。）
The old traditions are being brought back.（古老的传统正在恢复。）
22. play a part in doing sth.：参加做某事
Everyone can play a part in protecting the environment.（每个人都可以参与保护环境。）
She plays an important part in organizing the event.（她在组织活动中起着重要的作用。）
23. remember to do sth.：记得去做某事
Remember to lock the door when you leave.（记得离开时锁门。）
I always remember to thank my parents.（我总是记得感谢我的父母。）
24. can’t afford to do sth.：担负得起做某事
We can't afford to buy a new car.（我们买不起新车。）
She can't afford to take a long vacation.（她担负不起休长假。）
25. hope to do sth.：希望做某事
I hope to see you again soon.（我希望很快再次见到你。）
They hope to finish the project on time.（他们希望按时完成这个项目。）
二、练习题：
1. Smoking is _ your health. You'd better give it up.
A. good for B. harmful to C. good at D. harmful with
解析：be harmful to 表示“对……有害”，根据句意“吸烟对你的健康有害”，故选 B。
2. We should _ the waste and protect our environment.
A. cut down B. cut off C. throw away D. put to good use
解析：throw away 表示“扔掉”，与“waste（废物）”搭配，符合保护环境的主题，故选 C。
3. The situation is getting _.
A. better and better B. worse and worse C. good and good D. bad and bad
解析：worse and worse 表示“越来越糟”，符合“situation（情况）”的发展趋势，故选 B。
4. I _ heard of the story. It's very interesting.
A. just B. ever C. never D. yet
解析：just 表示“刚刚”，ever 表示“曾经”，never 表示“从未”，yet 表示“还”。根据句意“我刚刚听说这个故事”，故选 A。
5. You should _ your time and study hard.
A. make a difference B. take part in C. put to good use D. look like
解析：put sth. to good use 表示“好好利用某物”，time（时间）属于“sth.”，故选 C。
6. They decided _ a new school in the village.
A. set up B. to set up C. setting up D. to setup
解析：decide to do sth. 表示“决定做某事”，set up 表示“建立”，故选 B。
7. Remember _ the light when you leave the room.
A. to turn off B. turning off C. to turn on D. turning on
解析：remember to do sth. 表示“记得去做某事”，turn off 表示“关掉”，符合“light（灯）”的操作，故选 A。
8. The book is very interesting. It makes a big _ to me.
A. difference B. decision C. progress D. prediction
解析：make a difference 表示“起作用”，“这本书很有趣，它对我有很大的影响”，符合句意，故选 A。
9. You won't pass the exam _ you study hard.
A. if B. unless C. until D. when
解析：unless 表示“除非”，引导条件状语从句，符合“除非你努力学习，否则你不会通过考试”的句意，故选 B。
10. I can't _ to go to the concert. It's too expensive.
A. hope B. afford C. wait D. want
解析：can't afford to do sth. 表示“担负不起做某事”，“音乐会太贵了，我担负不起去”，符合句意，故选 B。
11. The old man's house was _ by the fire.
A. pulled down B. set up C. turned off D. put up
解析：pull down 表示“拆下；摧毁”，“老人的房子被火灾摧毁了”，符合句意，故选 A。
12. Exercise is _ our health.
A. good at B. good for C. bad for D. bad at
解析：be good for 表示“对……有益”，“锻炼对我们的健康有益”，符合常理，故选 B。
13. She _ long hair, but now she has short hair.
A. used to have B. is used to having C. was used to have D. used to be
解析：used to do sth. 表示“过去常常做某事”，be used to doing sth. 表示“习惯于做某事”。根据“but now”可知，前后是对比，“她过去留长发，但现在是短发”，故选 A。
14. We need to _ to solve the problem.
A. take action B. make a decision C. have a rest D. play a game
解析：take action 表示“采取行动”，“我们需要采取行动来解决这个问题”，符合句意，故选 A。
15. The little girl is always _ her mother.
A. looks like B. like C. looking like D. liked
解析：look like 表示“看起来像”，be like 表示“像”。根据 is 可知，此处需要用形容词，like 符合，故选 B。