【同步讲义】人教版英语九年级全一册-Unit 6 课时4 Writing 讲义

Unit 6 When was it invented？

知识点01  思路点拨

当前，科技发展日新月异，高新产业更是突飞猛进。现代科技改变了人们的生活，也激发了全民学科学、爱科学、用科学的热情，形成了“大众创业，万众创新”的科学热潮。本单元以“谈论发明物的历史及用途”为话题，涉及科普知识与技术等内容，是学生最感兴趣的话题之一。写作体裁多为说明文，写好这类文章一定要抓住事物的特征、功能和用途。在中考中，说明文一般要按照“总一分”结构或并列结构布局，而且在说明一件事物的时候，应按照一定的顺序：如时间顺序、空间顺序或逻提职序等。

体裁：说明文

时态：以一般现在时为主

人称：第三人称。

思路：1. What’s it and when was it invented?      

2. What’s it used for?

3. What does it look like?                   

4. How does it work?

5. How much is it?

知识点02  必背句型

1. I think … is a very useful invention.     我认为……是一项很有用的发明。

2. … was invented by …        ……是由…… (某人)发明的

3. … was invented in …        ……是在…… (某时间)发明的

4. It was used for …              它被用来……

5. … is made of ………         是由……(材料)制成的

6. ...have changed our life a lot.      极大地改变了我们的生活

7. . Which is the most useful invention?最有用的发明

8 .It makes my life more enjoyable and more convenient.他让我的生活更舒适和方便。

知识点03  提纲

知识点04  范文

This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip's memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and all short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.You must want to know how much my new invention is. It’s 500 yuan. It’s not very expensive, is it?I think the pen is so convenient and helpful .I believe you will also be happy with it.They are going to change your homework completely .

话题好句积累

【开头句】

1. Science plays an important part in our life. 科学在我们的生活中起着重要的作用。

2. … is an important/ useful invention.是一项重要/有用的发明。

3. WeChat is widely used in the world.微信在世界范围内应用广泛。

4. Shared bikes are more and more popular now.共享自行车现在越来越流行。

5. If I was an inventor. I want to invent a robot.如果我是个发明家。我想发明一个机器人。

6. Shopping online is very popular among young people.网上购物在年轻人中很受欢迎。

2. 中间句

1. Generally, its advantages can be seen as follows.一般来说，其优点如下。

2. Computers can do most of the things people can do.计算机能做人们能做的大部分事情。

3. Using smartphones distracts our attention from our lessons.使用智能手机会分散我们对课程的注意力。

4. Some students spend too much time online, playing electronic games and sending text messages after class.有些学生花太多时间上网、玩电子游戏和课后发短信。

【结尾句】

Through the above, I believe that the positive aspects overweight the negative ones. 综上所述，我认为积极的方面超过了消极的方面。

题组A  基础过关练

1．（2018·湖南娄底·中考真题）机器人Sophia的问世，引起了大家极大的兴趣。如果将来你有一个机器人，你想用它来干什么呢？为此，你们班在英语活动课上进行了热烈的讨论，请根据下面的图表，用英语写一篇短文，总结讨论的情况，并谈谈你自己的想法。

1.要点：

2.要求：

(1)文中不能出现真实的校名和姓名等；

(2)语言要通顺，表达要正确；

(3)要求包含所有要点提示，为了行文需要，可适当增加要点；

(4）词数不少于60个英语单词，开头已给出，不计入总词数。

3.参考词汇：

聊天娱乐chat and play

Sophia, a robot woman, has come into the world. It caused a heated discussion in our English class. If we have a robot, what shall we ask it to do? Here are the results.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【答案】例文

Sophia, a robot woman, has come into the world. It caused a heated discussion in our English class. If we have a robot, what shall we ask it to do? Here are the results.

Fifty percent of the students say they will ask the robot to help with the housework or help to look after old people. Thirty percent of the students say they will ask the robot to help with their study. When they’re tired, they will use the robot for chatting and playing. Twenty percent of the students will ask the robot to do more interesting things. Some of them say they will ask the robot to do volunteer work with them. And some of them say they will use the robot to pick up the litter on the street to protect our environment.

In my opinion, there are advantages of robots and trouble as well. But it is certain that our life will be better with the development of science and technology.

【详解】1.题目解读：题目要求根据所给的图表，用英文写一篇短文，叙述同学们想用机器人Sophia做的事，并谈谈你自己的想法。

2.写作指导：本文主要以第三人称写作，时态主要为一般现在时和一般将来时。通过所给图表介绍讨论的结果，叙述每种情况所占的比例以及想要机器人做的事情。可以围绕主题准确使用一定的语法、词汇、短语和句型等；语言的表述要符合语法的结构，造句应该符合英语的表达习惯；层次要分明、条理要清晰。

2．（2022·江苏常州·一模）你们班开展了一次以 “The Greatest Invention in My Eyes” 为主题的英语演讲比赛，请你准备发言稿，与同学分享，内容包括：

1. What’s the greatest invention in your eyes?

2. Why do you think it the greatest invention?(At least three reasons)

3. What influence it has to human?

注意：

1. 文中不得出现真实的姓名和校名；

2. 词数100左右。短文开头和结尾已给出，不计入总词数。

The Greatest Invention in My Eyes

Hello, boys and girls!

Some people think that the greatest invention in the world is cars, while the others believe that computers are the most useful tools we need in the modern society. But in my eyes, the greatest invention is ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

That’s all. Thank you!

【答案】例文

The Greatest Invention in My Eyes

Hello, boys and girls!

Some people think that the greatest invention in the world is cars, while the others believe that computers are the most useful tools we need in the modern society. But in my eyes, the greatest invention is just books.

A famous person has ever said: “Books are the steps of human’s progress.” Exactly! That’s what I would like to say firstly. In the long history of human being, books have played an important part in providing us with knowledge. And it is knowledge that changes our lives.

Secondly, the best way to broaden our horizons is reading books, because books provide us with different ideas. As a result, we can have our own opinions different from others instead of obeying any other person’s.

What’s more, books are considered as teachers without sound. When we deal with difficulties, it is a good choice to ask for help from books. Books are like a patient teacher and will give us answers whenever we need.

So I think books are the greatest invention in the world because we can learn many useful things and get benefits from reading. Books make us a full man.

That’s all. Thank you!

【详解】1.题干解读：该题目是写一篇发言稿，开头和结尾已给出，要求根据内容提示，以 “The Greatest Invention in My Eyes” 为主题写一篇发言稿，可适当发挥。

2.写作指导：本文应该用第三人称来写作；时态采用一般现在时为主；注意叙述你认为它是最伟大的发明的原因时至少要有三点，并且注意主谓一致。该发言稿可以在第一段说明在你眼里最伟大的发明是什么；第二段、第三段以及第四段叙述你认为它是最伟大的发明的原因（至少三点原因）；第五段总结说明它对人类的影响。全文需要叙述完整、条理清晰。

题组B  能力提升练

3．（2022·北京·模拟预测）人工智能（AI）的迅速崛起无疑是新世纪以来最为重要的科技事件，而我们的生活也将因为人工智能的成熟应用迎来巨大改变。假如是李华，你校将于周六上午十点使用视频会议举办一场介绍人工智能的线上讲座。你打算邀请你校英国留学生Tom一起参加。请用英语给Tom写一封邮件，邀请他参加线上讲座（online lecture），向他说明举办讲座活动的时间、目的以及讲座的内容。

提示词语：helpful, convenient, introduce, examples, apply(应用)...to..., questions

提示问题：

●What time will the online lecture start?

●Why will the school hold this activity?

●What will the speaker talk about?

Dear Tom,

I’m writing to invite you to attend an online lecture about AI technology. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Hope you will be there on time and enjoy it. If there is anything more that you want to know, please tell me.

Yours,

Li Hua

【答案】例文

Dear Tom,

I’m writing to invite you to attend an online lecture about AI technology. It will start at 10 o’clock on Saturday morning. During the lecture, the speaker will introduce what AI is. Then, he will tell us how to use it in our daily life since it is helpful and convenient.

To attend the online lecture, you need to get your computer or your phone ready. And please make sure you can get online. It is a good idea to prepare a notebook because you will need to take down some examples and answer some questions. We can apply AI to our daily life.

Hope you will be there on time and enjoy it. If there is anything more that you want to know, please tell me.

Yours,

Li Hua

【详解】1.题干解读：本文是一篇邮件作文。要求根据提示内容，给Tom写一封邮件，邀请他参加线上讲座。注意要点齐全，可适当发挥。

2.写作指导：写作时要以第二、第三人称来行文，时态用一般将来时和一般现在时。作文要分别介绍讲座活动的时间、目的以及讲座的内容。要保证语言连贯，无语法和拼写错误。

4．（2017·广东广州·中考真题）假如你发明的“飞行单车”在学校科技节中获奖，被推荐参加一个国际青少年科技展览。请用英语介绍你的发明,内容包括下图中1-4项.

注意：

（1）参考词汇：轮子wheel太阳能solar power（2）词数80左右（文章的开头已给出，不计入词数）。

（3）不得透露学校、姓名等任何个人信息，否则不予评分。

My invention is a flying bike.... _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【答案】My invention is a flying bike．It is fast，convenient and green! The flying bike has two wheels and two wings．It has a top speed of 300km/h. You can go to farther places in a shorter time．It can run on land and fly in the air．If you shout "fly" the bike will turn into a plane in 30 seconds．Then you can fly in the air．You will be as free as a bird．It can take photos，too．Instead of petrol，the bike uses solar power，so it will not pollute the air．I will add a seat behind it so that it can carry two persons. My invention will help people live a better life in the future．

【详解】题目解读：本文是一篇材料作文，要求介绍一项发明，题目中给出外观、用途、特点，需要作者展开想象，写出一两点改进计划。

写作指导：本文是一篇说明文，人称主要是第三人称，时态是一般现在时。注意主谓一致，介绍内容清晰，有条理。

题组C  培优拔尖练

5．（2022·浙江湖州·中考真题）假如你是李雷，上周参观了以“Working the Waste into Magic”为主题的环保作品展。请你根据以下信息，写一篇短文，在英语课上介绍相关展品并分享自己的想法与感受。

注意：

（1）短文须介绍至少两项展品，可适当发挥；

（2）文中不得出现真实姓名、学校等信息；

（3）词数：80—100。短文首句仅供参考，不计入总词数。Hello, everyone! I’d like to tell you something about the show “Working the Waste into Magic” . _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【答案】Possible version:

Hello, everyone! I’d like to tell you something about the show “Working the Waste into Magic”.

A number of creative works were on show, including clothes made from waste paper and model planes made of used wood and glass. Another fascinating work is a chair that is made of plastic bottles. They are glued together and painted in different colors.

I was most interested in a backpack for computers. It is made out of a pair of old jeans! With the zipper of jeans on the top, two pockets on two sides, the backpack looks both useful and fashionable. It even has a logo!

I felt amazed at how waste could be put to such good use. It really helps to save energy and build a greener future.

【详解】1. 题干解读：题目要求根据提示要点，介绍“变废为宝”的环保作品展的情况，可以适当的发挥，写作时要运用正确的英语表达，要选用恰当的词汇和短语。

2. 写作指导：写作时要与已给出的开头融合起来，本文应该用第一人称、第三人称来介绍内容；时态采用一般过去时；在介绍内容时，力求语言准确，内容完整，保证行文连贯，条理清晰。

6．（2021·四川凉山·中考真题）近年来，越来越多的人在超市、影院、餐馆等地方消费时，经常使用手机扫码支付。移动支付（mobile payment）深受人们喜爱。假如你是李华，学校即将开展以“Mobile Payment Changes Our Life”为题的征文活动，请根据下列表格中的提示，介绍一下移动支付并呼吁人们理性消费。

要求：

1.语言表达准确，短文连贯、通顺；

2.短文应包括所有提示内容，可适当发挥，不要逐句翻译；

3.词数80左右。文章开头已给出，不计入总词数。

参考词汇：扫码scan QR codes支付 pay三思 think twice理智 wisely▲       

More recently, mobile payment is liked by many people._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【答案】例文：

Mobile Payment Changes Our Life

More recently, mobile payment is liked by many people. It is becoming more and more popular in China. It has made people’s daily life very convenient. Most of us are used to paying by scanning QR codes. By mobile payment, we can pay easily and quickly wherever we go. We can have dinner in a restaurant and pay by scanning QR codes with our smart phones. In a cinema, we can buy our tickets in the same way. Mobile payment is changing our life.

However, we should spend money wisely. First of all, think twice about what we want to buy. Next, learn to save, buy what we can afford. Last but not the least, spend on what we really need, don’t buy everything we want.

【详解】1.题干解读：本文是一篇材料作文。围绕“移动支付改变我们的生活”为题写一篇短文。

2.写作指导：本文主要用一般现在时。分为两段式：第一段介绍有关移动支付的情况，并举例说明这种支付方式的方便快捷；第二段呼吁人们要理性消费。写作时保持主谓一致性，逻辑性要强，无语法和标点错误。