九年级全一册英语（人教版）同步训练：Unit 6 When was it invented? Section B (3a-3b)单元主题写作（含答案）

　[Unit 6 Section B (3a-3b)单元主题写作]
本单元的话题是“发明”,涉及科普知识与技术等相关内容,此话题的写作体裁多为说明文。写作时可以从介绍自己最喜爱的发明的特征、功能和用途以及喜欢的理由等方面入手。
Ⅰ.高频短语
1.错误地;无意中　　　　　　　　
2.偶然;意外地　　　　　　　　
3.阻止……去做……　　　　　　　　
4.突然;猛地　　　　　　　　
5.被用来……　　　　　　　　
6.发生　　　　　　　　
7.对……有益　　　　　　　　
8.毫无疑问;的确　　　　　　　　
9.因……而出名　　　　　　　　
10.不但……而且……　　　　　　　　
Ⅱ.经典句型
11.它是由特殊材料制成的。(be made of)

12.它被用来做家务活。(be used for)

13.它为我们提供不同种类的信息,因此我们能更多地了解世界。(so that)

14.毫无疑问,手机在我们日常生活中起着重要作用。(without doubt)

15.它是世界上最有用的发明之一。(one of…)

Ⅲ.典句仿写
16.Shopping on the Internet is becoming more and more popular now.
仿句: 手机在我们的日常生活中变得越来越重要。

17.It is difficult for us to imagine what life was like in the ancient world.
仿句: 人们通过手机相互交流很方便。

18.At that time, the computer was as big as a room.
仿句: 在那时,它和建筑用砖一样大。

19.We can watch films, listen to music and read books on the phone at any time.
仿句: 我们可以随时使用它们与我们的朋友交谈。

20.I think robots will be smarter and smarter in the future.
仿句: 我相信手机会越来越薄。

　　假设这周你们学校的英语角谈论的话题是“手机的发展史”。请你从手机的发明时间(1973年)、外观(large, heavy)和用途等方面,和同学们谈论一下它的发展变化,并描述你对未来手机的畅想。
要求:1. 语意连贯,语句通顺;
2. 不少于80词。
写作思路






　[Unit 6 Section B (3a-3b) 单元主题写作]
[语料积累]
Ⅰ.1.by mistake　2.by accident 3.stop…from…　4.all of a sudden
5.be used for　6.take place 7.be good for　8.without doubt
9.be famous for　10.not only…but also…
Ⅱ.11.It is made of special materials.
12.It is used for doing housework.
13.It provides us with different kinds of information so that we can know more about the world.
14.Without doubt, the mobile phone plays an important part in our daily life.
15.It’s one of the most useful inventions in the world.
Ⅲ.16.Mobile phones are becoming more and more important in our daily life.
17.It’s convenient for people to communicate with each other by mobile phone.
18.At that time, it was as large as a building brick.
19.We can use them to talk with our friends at any time.
20.I believe that mobile phones will become thinner and thinner.
[习作展示]
One possible version:
Mobile phones are becoming more and more important in our daily life. It’s convenient for people to communicate with each other by mobile phone. Do you know the history of mobile phones
The first mobile phone was invented in 1973. At that time, it was as large as a building brick and much heavier than the mobile phone today. Mobile phones have many uses. For example, we can use them to talk with our friends at any time. We can also use them to take photos or listen to music.
I believe that mobile phones will become thinner and thinner and that smartphones will take the place of computers in the future.