九年级英语知识点 Unit 13

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九年级英语知识点

Unit13We're trying to save the earth!

【短语归纳】

1. at the bottom of the river 在河床底部

2. be full of the rubbish 充满了垃圾

3. throw litter into the river 把垃圾扔入河中

4. play a part in cleaning it up

尽一份力把它清理干净 5. land pollution 土地污染

6. fill the air with black smoke 使空气中充满了黑烟

7. cut down air pollution 减少空气污染8. make a difference 产生影响

17. take action 采取行动18. turn off 关掉19. pay for 付费

20. add up 累加21. use public transportation 使用公共交通

22. recycle books and paper 回收书和废纸23. use paper napkins 使用纸巾

24. turn off the shower 关掉喷头25. ride in cars 开车出行

【重点句子】

1. Even the bottom of the river was full of rubbish. 即使河底都充满垃圾。

2. Everyone in town should play a part in cleaning it up. 城里的每个人都应当尽一份力把它清理干净。

3. The air is badly polluted because there are too many cars on the road these days.

空气被严重污染因为如今路上的汽车太多了。

4. To cut down air pollution, we should take the bus or subway instead of driving.

为了减少空气污染,我们应当乘坐公汽或地铁而不是开车。

5. I used to be able to see stars in the sky. 我过去能在天空中看到星星。

6. The air has become really polluted around here. I’m getting very worried.

这儿的空气真的已经被污染了,我非常担心。

7. No scientific studies have shown that shark fins are good for health.

没有科学研究说明鱼鳍对人们的健康有好处。

【单元知识点】

1. cost vt.1. 花费;价格为;It must cost a good deal to live here.

住在这里一定要花很多钱的

拓展:take,spend ,cost ,pay的用法都可以表示“花费”,但用法却不尽相同。

1)spend的主语必须是人,常用于以下结构:

(1)spend time /money on sth. 在……上花费时间(金钱)。

I spent two hours on this maths problem. 这道数学题花了我两个小时。(2)spend time /money (in)doing sth. 花费时间(金钱)做某事。例:They spent two years (in)building this bridge. 造这座桥花了他们两年时间。(3)spend money for sth. 花钱买…His money was spent for books.

他的钱用来买书了。

2)cost的主语是物或某种活动,还可以表示“值”,常见用法如下:

(1)sth. costs (sb.)+金钱,某物花了(某人)多少钱。例:A new computer costs a lot of money. 买一台新电脑要花一大笔钱。

(2)(doing)sth. costs (sb.)+时间,某物(做某事)花了(某人)多少时间。Remembering these new words cost him a lot of time. 他花了大量时间才记住了这些单词。

注意:cost的过去式及过去分词都是cost,并且不能用于被动句。

3)take后面常跟双宾语,常见用法有以下几种:

(1)It takes sb. +时间+to do sth. 做某事花了某人多少时间。例:It took them three years to build this road. 他们用了三年时间修完了这条路。

(2)doing sth. takes sb. +时间,做某事花了某人多少时间。例:Repairing this car took him the whole afternoon. 他花了一下午修车。

4)pay的基本用法是:

(1)pay (sb.)money for sth. 付钱(给某人)买……例:I have to pay them 20 pounds for this room each month. 我每个月要付20英磅的房租。

(2)pay for sth. 付……的钱。I have to pay for the book lost. 我不得不赔丢失的书款。

(3)pay for sb. 替某人付钱。例:Don?蒺t worry!I'll pay for you.

别担心,我会给你付钱的。

(4)pay sb. 付钱给某人。例:They pay us every month.他们每月给我们报酬。

(5)pay money back 还钱。例:May I borrow 12 yuan from you?

I'll pay it back next week. 你能借给我12块钱吗?下周还你。

(6)pay off one's money还清钱。

2. This method is not only cruel, but also harmful to the environment.

这种方法不仅残酷,而且对环境有害。

(1)not only…but also…意为“不仅……而且……”用于连接两个表示并列关系的成分,着重强调后者,其中的also有时可以省略。

She not only plays well, but also writes music. 她不仅很会演奏,而且还会作曲。

He not only writes his own plays, he also acts in them.

他不仅是自编剧本,还饰演其中的角色。

He works not only on weekdays but on Sundays as well.

他不仅平时工作,星期日也工作。

(2)若连接两个成分作主语,其谓语通常与靠近的主语保持一致。

Not only you but also he has to leave. 不只是你,他也得离开。

(3)若连接两个句子,not only后面的句子要用倒装,

Not only did he speak more correctly, but he spoke more easily.

他不仅说得更正确,而且讲得更不费劲了。

3. work n. (音乐,艺术)作品作名词

1) 不可数,意为:工作;劳动;作业;功课事,成果,产品;工艺品,针线活

如:It takes a lot of work to dig a deep well. 挖一口深井很费事。

I have to bring my work home today. 今天我得把工作带回家做。

2) 作可数名词着作,作品

He is making a study of William Faulkner's works. 他在研究威廉•福克纳的作品。

作不及物动词(vi.)

1) 工作,劳动,干活[(+at/on)] She works in a restaurant.她在一家饭店工作。

2) (机器等)运转,活动The machine won't work.机器不转了。

作及物动词(vt.)1) 使工作,使干活Don't work yourself to death. 别拼命做了。

2) 开动;操作Please tell me how to work the machine. 请告诉我如何操纵这机器。【语法归纳】

动词不定式做目的状语时的用法

To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染,我们应当乘坐公汽或地铁而不是开车。

To cut down air pollution是动词不定式作目的状语。

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