人教版九年级英语上册 《When was it invented?》PPT下载(第1课时)

人教版九年级英语上册《When was it invented?》PPT下载(第1课时)，共43页。

学 习 目 标

听并用被动语态谈论重要的发明及其历史

(1)—When was … invented?

—I think it was invented in…

(2) I think … is invented before/after…

听并用被动语态谈论发明物的用途

What is/are … used for?

It is/they are used for...

课 堂 学 习

Do you know what these inventions are? 

Bell invented the first telephone in 1876.

The first telephone was invented (by Bell) in 1876. 

Karl Benz invented the first car in 1885.

The first car was invented (by Karl Benz) in 1885. 

J. L. Baird invented the first television in 1927.

The first television was invented (by J. L. Baird) in 1927. 

Lead-in

Where can you see it?

Pants, trousers, bags, backpacks, shoes, suitcases, etc.

Role-play the conversation. 

Read the passage quickly and answer the questions.

1. Who invented the zipper?

It was invented by Whitcomb Judson.

2. When was the zipper invented?

It was invented in 1893.

3. When was it used widely?

It was invented in 1917.

Homework

Preview the passage in 3a.

Look up some information about some famous inventions.

... ... ...

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