《Language in use》Great inventions PPT教学课件

外研版九年级英语上册《Language in use》Great inventions PPT教学课件，共27页。

新课导入

根据汉语完成句子

1.它们将被公布在学校的网站上。

They’ll____ _____ _____on the school website.

2.未来电脑会比书籍应用更广泛吗？

______computer _____ ______more than books in the future?

3.书籍会被互联网所取代吗？

______books______ ___________by the Internet?

新课讲解

Complete the sentences and conversations with the correct form of the words and expression in brackets. 

1．________ books ____________ (replace)by computers in the future?

2．My bike is broken. It _____________ (fix)tomorrow.

3．—Dad，can I use the Internet this evening?

—Yes，but the computer is not on yet. The electricity______________________(not connect)until nine o’clock.

4. ____ the problem ____________ (talk about) at the meeting tomorrow?

5. Who ____________ (invite) to give a report about great inventions next Friday?

6. –When ___ the work _________ (finish)?

–In two days. 

Possible answers

A new floor will be built.

New furniture/desks/chairs will be bought.

A new blackboard will be bought.

A new interactive whiteboard will be bought.

The windows and the door will be changed.

The teacher’s desk will be painted.

The lights will be changed.

The colour of the walls will be changed.

Listen again and answer the questions.

1.Why were so few books produced in ancient times?

Because they were written by hand.

2.Why were many old books copied onto a computer?

They are too valuable to be picked up and held in the  hand.

3. How has the computer helped people  read old books in the British Library? 

Old books were copied onto a computer  a few years ago for people to be able to read them without touching them.

Work in groups. Prepare for your discussion.

Think of an invention that has changed your life.

Make notes about the invention:

1 What is it?

2 Why is it useful?

Research how the invention has been developed  and make notes about what you find out.

Language points

allow /ə’laʊ/ v. 允许

(1)allow作“允许”或“许可”讲，

allow sb. to do sth.允许某人做某事。

(2)allow 作“许可，允许”讲，

只可说 allow doing sth.,  不可说allow to do sth.。

eg：They allowed smoking in this room only. 

他们只允许在这间屋子里抽烟。

My boss doesn’t allow me to use the telephone. 

我的老板不允许我用电话。

not all…并非所有的

eg：Not all people can afford a car.

并非所有人都买得起轿车。

not all是部分否定，英语中的not与all, every, everyone, everything, both等词连用时，都表示部分否定，意为“并不都……”。若表示全部否定时，要用none, neither, no one, nothing等。

That changed in 1991, when a British scientist named Tim Berners-­Lee invented the World Wide Web.

在1991年，当一个叫蒂姆•伯纳斯­李的英国科学家发明了万维网的时候，这种情况发生了改变。

when引导非限制性定语从句，修饰先行词1991，在 定语从句中作状语；named Tim Berners­Lee为过去分词 短语作后置定语，

相当于who was named Tim Berners­Lee,修饰a British scientist。

课堂小结

Key words

direction, electricity, repair/fix, connect

Key Phrases

give a report, stay away form, send and receive message, 

with the development of…

Key sentences

The Web also makes people’s lives easier because now many things can be done from home,twenty-four hours a day.

The Internet was invented by the US government in the 1960s.

… … …

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