英语九年级Units 3的知识点

英语九年级Units 3-4总复习要点

Now, China has become the third nation to send people into space. 此句中得 to send

people into space 是不定式作 the third nation 的定语，类似的有： He thought out a good

way to solve the problem. 3. I’m moved by what Yang Liwei did. 此句是一个宾语从句

what Yang Liwei did 作介词by的宾语。 She is moved by what her students said. 4.

Pleased to meet you. 见到你很高兴。 类似说法： Nice to meet you. Nice to see you. I’m glad to meet /see you. 5. It has proved that China has made great progress in

developing its space industry. 这是一个带有宾语从句的主从复合句，其中it 指的是上文的trip，that引导的句子做proved的宾语。 6. There is no doubt that computers are widely

used by workers in business and technology. 毫无疑问，电脑被商业、科技工作者广泛地应用。 no doubt 毫无疑问 There is no doubt that you did the right thing. 毫无疑问，你做的对。 7. Computers are used in business to place and cancel orders. 计算机在商务上是用来订货和取消订单的。 Place an order for sth. 订货，订购，订单 I would like to place an

order for ten copies of this book. 这本书我想订购十册。 8. Thanks to the Internet, they

can shop and do business at home. 由于有了因特网，他们可以在家购物和做生意。

Thanks to your help, I have made great progress in studying English. 9. Generally

speaking, we are in good health now. 总体来说，我们身体状况良好。 be in good health 身体状况好 be in bad health 身体状况坏 It is a pity that he is in bad health these days. 遗憾的是他这几天身体不好。 10. It’s bad for your health if you spend too much time on

them. 1) be bad for sth./ sb. 对某事/某物有坏处 Watching TV too much is bad for your

eyes. 2) if 引导的条件状语从句的主从复合句要注意时态问题，如果主句用一般将来时从句要用一般现在时表将来。 I will be happy if you don’t go to work tomorrow. 3) spend

sometime on sth. 某人花时间或金钱在某事上 4) spend somemoney (in) doing sth. 某人花时间或金钱做某事 She spend two days on this book, you shouldn’t spend too much

time (in) watching TV. 11. It’s used for sending satellites or spaceships into space. be

used for doing sth. …… 被用来做什么，强调用途或作用 be used as (被)作为…而用，强调被当作工具或手段来用 be used by 被…使用 by的后面跟人/物，强调使用者 sb. used

to do sth. 某人过去常常做某事 sb. be/get used to doing sth. 某人习惯于做某事 sth. be

used to do sth. …… 被用来做…… 强调用途或作用 Keys are used for opening locks.

“Help” can be used as a noun. “Help” 可作名词用 Chalks are often used by teachers.

老师经常使用粉笔。 My mother used to go swimming last year. 我妈妈去年经常去游泳。

She is/gets used to going swimming now. 现在他已习惯于游泳了。 This kind of machine

is used to water flowers. 这种机器是被用来浇花的。 12. It’s said that Edison made more

than one thousand inventions during his life. 据说，爱迪生一生中做了千多种发明。 此句中的It’s said that… 其中it 作形式主语，真正的主语是that 引导的句子。整个句子是带有主语从句的主从复合句。 It is said that she has got married. 听说她结婚了。 It is not

known whether they will come today. 他们今天是否会来还不知道。 13. This method

worked well at night as long as the weather was good and the stars could be seen. 在晚上，只要是天气好和能看见星星的情况下，这种方法就管用。 此句中的as long as只要引导的条件状语，相关的短语： 14. as soon as 一……就 as well as 除……之外（也） You

must pass the final examination as long as you study hard from now. 只要你从现在开始努力学习，你一定会通过期末考试的。 I will call you as long as I get home. 我一到家就给你打电话。 As well as you, my mother also likes this soft music. 15. We will be able to do

anything that can be done on the earth. 我们将能够做在地球上能做的任何事。 此句中的that can be done on the earth是一个定语从句，修饰anything。由于此句中的先行词是anything，关系代词只能用that。类似的还有先行词有以下这些修饰时，关系代词只能用that，不用who或which。如： the first, the last, the only, the same, the very, all, any, no, every

This is the very thing that I lost yesterday. 这个正是我昨天丢失的那个东西。 16. I won’t

believe there are aliens until I see them with my own eyes. 直到我亲眼所见，我才不会相信有外星人。 not…until… 直到……才…… She couldn’t play the piano until she was

eight years old. 直到八岁时她才会弹钢琴。 17. I’d like to be an astronaut when I grow up.

长大了我想当一名宇航员。 此句中的when I grow up是时间状语从句，引导时间状语从句的还有before, after, as soon as等，他们引导的时间状语从句在时态上有一点需注意：如果主句用一般将来时，从句用一般现在时表将来。 You will get much money after you finish

this project. 完成这个项目之后，你就会得到很多的钱。 18. But I prefer science to dancing.

但比起跳舞来说，我更喜欢科学。 prefer sth. to sth. 比起后者来说，更喜欢前者。 其中的to是介词。 I know you prefer English to Chinese. 我知道比起语文来说，你更喜欢英语。

19. It is reported that China plans to take part in an international flight to explore Mars. 据报道中国打算加入国际飞行来研究火星。 1) 其中的It is reported that…. 是一个由主语从句引导的主从复合句，it作形式主语，真正的主语是that引导的句子。 类似的结构有： It is

well-known that…. It is said that…. It is strange that…. 2) to explore Mars 是不定式在句中作目的状语。 I stay have to see what will happen. 我留在这儿看看会发生什么事。 20. 被动语态 1) 被动语态构成：助动词be + 及物动词的过去分词。助动词be 必须与主语的人称和数量保持一致，并有时态的变化。 Disneyland is enjoyed by millions of people from all

over the world. It is also spoken as a second language in many countries. The man was

fooled by the two boys. 2) 时态 ①一般现在时 助动词 be + 动词的过去分词 Spanish is

spoken as the official language there. ②一般过去时 助动词 was/were + 动词的过去分词

The man was fooled by the two boys. ③一般将来时 will/ be going to do + be + 动词的过去分词 The 2008 Olympic Games will be held in Beijing. ④现在完成时 have /has + been