《When was it invented?》PPT課件13

Look and number the things in right order.

A: ?I think the TV was invented before the car. What’s your opinion?

B: ?I agree./ I don’t think so/disagree. I think the TV was invented after the car.

According to what you have listened, answer the questions below.?

1. What did the grandma have when she was young??

2. Why didn’t they have a TV at that time??

3. Does grandma have personal computer now??

... ... ...

What invention are they talking about?

The zipper.

Who invented the zipper?

It was invented by Whitcomb Judson.

When was the zipper invented?

In 1893.

When was it used widely?

In 1917.

Where can you see zippers?

On dresses, trousers, shoes, bags,… almost everywhere.

... ... ...

discover, invent和find都是動(dòng)詞, 它們的詞義相近, 但是有區(qū)別:

★discover意為“發(fā)現(xiàn)”, 指發(fā)現(xiàn)某種本來存在,但以前未被發(fā)現(xiàn)或未為人所知的事物或現(xiàn)象。

The lost bike was discovered at the bus stop.?

丟了的自行車在公共汽車站那兒找到了。?

Later I discovered that he was so kind.

后來我才發(fā)現(xiàn)他那么善良。

★invent 意為“發(fā)明”, 指發(fā)明以前不存在的東西。

Do you know who invented the computer? 你知道誰發(fā)明的電腦嗎？

★find 意為“找到, 發(fā)現(xiàn)”, 指偶然發(fā)現(xiàn)或幾乎沒有困難地發(fā)現(xiàn)。

I found some old photos in that drawer.我在那個(gè)抽屜里發(fā)現(xiàn)了一些舊照片。?

... ... ...

根據(jù)句意和所給漢語提示, 完成下列單詞的確拼寫。

1. That’s the most _________ (有用的) book.

2. It is said that Thomas Edison had 1,093___________ (發(fā)明) during his lifetime.

3. --- What is this kind of machine used for?

--- It’s used for _________ (聽) to music.?

4. If you _________ (加熱) the ice, it will soon become water.

5. Children also need time _________ (玩耍).?

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