初三英语上册(人教新目标)Unit13We’retryingtosavetheearth!_知识点总结

Unit 13 We’re trying to save the earth!

知识点总结

一、重点词汇

词义辨析：cost/spend/take/pay

都与“花费”有关，但用法上有区别。

His brother joined the army two years ago.

两年前他哥哥参军。

May I join in your discussion?

我可以参加你们的讨论吗？

Hundreds of students attended the lecture given by the famous professor.

数百人参加了这位著名教授的讲座。

词义辨析：turn词组

afford to do sth.：买得起……，足够支付……

We can’t afford to pay such a high price.

我们付不起这个价钱。

be harmful to：对……有害

Staying up often is harmful to your health.

经常熬夜对你的健康有害。

拓展：

1. harm：n. 害处

2. do harm to：对……有害

at the top of：在……顶端

There was not enough oxygen at the top of the mountain.

山顶上缺氧。

He shouted at the top of his voice in order to be heard.

他尽力大声叫喊，以便别人能听见。

拓展：反义词

at the bottom of：在……的底端

take action：采取行动

The police had to take action to deal with the riots.

警方不得不采取行动来对付骚乱。

throw away：扔掉；错过（机会等）

Many people throw away cigarette ends carelessly.

许多人随手乱扔香烟头。

Don’t throw away this opportunity.

别错失这次机会。

拓展：

1. throw at：扔向……

2. throw about：到处扔

put sth. to good use：好好利用某物

If you focus your mind on the task, your talents can be put to good use.

如果你集中精神在工作上，你的才能就能好好利用起来。

pull…down：拆毁

They are going to pull down the old building and replace it with a new shopping mall.

他们打算把这幢旧建筑拆掉，并代之以新的商场。

upside down：上下颠倒

The lid, turned upside down, served as a coffee table.

那个盖子被反过来当作咖啡桌。

bring back：归还；使想起

Your article brought back sad memories for me.

你的文章使我想起了伤心的往事。

拓展：bring 词组

1. bring up：抚养长大

2. bring in：引进

3. bring forward：提出

4. bring about：带来，造成

一词多义：work n.工作；（音乐、艺术）作品；工厂 v. 工作

He has much work to do.

他有很多工作要做。（做“工作”讲，为不可数名词）

The man gained his wealth by printing works of famous writers.

他通过印刷著名作家的作品来获得财富。（做“作品”讲，为可数名词，但常用复数）

The glass works is/are near the station.

玻璃厂在车站附近。（做“工厂”讲，只用复数形式，但谓语动词单复均可）

拓展：

英语中有些名词，单复数形式意义有差别。

manner 方式，方法 manners 礼貌，礼仪

arm 胳膊 arms 武器

water 水 waters 海水，水域

wood 木头 woods 森林

识记词汇

fisherman n. 渔夫

coal n. 煤

wooden adj. 木制的

takeaway n. 外卖食物

chain n. 链条

the food chain 食物链

ecosystem n. 生态系统

law n. 法律

scientific adj. 科学的

transportation n. 交通

napkin n. 餐巾纸

gate n. 大门

president n. 总统，主席，负责人

metal n. 金属

二、重点句型

Other advantages of bike riding are that it’s good for health and it doesn’t cost

解析：本句的主干是 Other advantages of bike riding are…；that it’s good for health…anything 是由 that 引导的

表语从句；其中 it’s good for health 和 it doesn’t cost anything 是骑自行车的两个优势。

翻译：骑自行车的其它好处有：有益健康而且不花钱。

But do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup?

解析：本句的主干是do you realize…？；that you’re killing a whole shark 是 realize 的宾语从句；each time you

enjoy a bowl of shark’s fin soup 是时间状语从句。

翻译：但是你有没有意识到每次你喝鱼翅汤的时候其实是在杀害一整头鲸鱼？

出题建议：确定好题型后，在关键词中输入：each time。

Many believe that sharks can never be endangered because they are the

解析：本句的主干是 Many believe…；that sharks can never be endangered 是 believe 的宾语从句；because

they are the strongest in their food chain 是由 because 引导的原因状语从句。

翻译：许多人相信，鲨鱼不会遇到危险，因为在它们的食物链中，鲨鱼是最强壮的。

Not only can the art bring happiness to others, but it also shows that even cold,

解析：本句的主干是 Not only can the art bring happiness to others, but it also shows，主干是由 not only…but

also…连接的并列句；that even cold, hard iron can be brought back to life with a little creativity 是 shows 的宾语从

句。

翻译：艺术不仅仅可以给他人带来快乐，同时也表明只要有创意，即使冷硬的钢铁都可以恢复生机。

三、重点语法

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