《When was it invented?》SectionA PPT教学课件

人教版九年级英语上册《When was it invented?》SectionA PPT教学课件，共32页。

Learning Objectives

By the end of the class, you will be able to:

use “was/were done” to introduce different inventions;

use “be used for” to talk about functions.

Listen and answer the questions.

Which invention did Roy mention? 

The zipper. 

Is it a great invention? Why?

Yes, it is.

Because it’s used widely in our daily lives. It can be seen on dresses, trousers, shoes, bags … almost everywhere.

Language points

Well, you do seem to have a point …

have a point: 指某人的说法或者想法“有道理”。

do: 在肯定句和祈使句当中，在谓语动词前添加助动词do常用来表示强调。

我真的希望你能来参加我的聚会。

I do hope you can come to my party.

Could you find some common points among these sentences?

1. The pioneers of different inventions were listed there.

2. The zipper was invented by Whitcomb Judson in 1893.

3. But at that time, it wasn’t used widely.

… … …

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