人教新目标九年级英语Unit13 知识点总结和同步练习
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Unit13 We're trying to save the earth!
【重点短语】
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
【重点句型】
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。
【知识点】
1. cost vt.1. 花费;价格为;值
例句: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)。例: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……例: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。例: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。例: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。
如: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。