《When was it invented?》PPT課件8

Lead in?

Talk about the inventions(發(fā)明).

Which one do you think is the most helpful in our daily life?

Role-play the conversation.?

Read the passage quickly and answer the questions.

1. What is the subject for their school project??

2. What ?kind of invention does Roy think of?

3. Why does Roy think ?it is a great invention??

4. Who and when was the zipper invented??

5. When did the zipper become popular??

... ... ...

Complete the sentences with the correct forms of the verbs in the box.?

invent, ?drink, ?bring, ?produce, ?trade

1.One of the world’s favorite drinks was________ by accident.

2.Tea was first ________ by Shen Nong 5,000 years ago. ?

3.A nice smell was _________ when the tea leaves dropped into the hot water.?

4. Tea was__________ to Korea and Japan during the 6th and 7th centuries.?

5.Tea is now ________ between many different countries.?

... ... ...

The simple past passive voice

一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)

一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)表示過(guò)去經(jīng)常性、習(xí)慣性被動(dòng)動(dòng)作或過(guò)去某一時(shí)刻發(fā)生的被動(dòng)性動(dòng)作，與主動(dòng)語(yǔ)態(tài)相比,被動(dòng)語(yǔ)態(tài)中主語(yǔ)是謂語(yǔ)動(dòng)作的執(zhí)行者。?

被動(dòng)語(yǔ)態(tài)的構(gòu)成:

助動(dòng)詞was/were+ (及物動(dòng)詞的) 過(guò)去分詞?

was (were) + done

用所給動(dòng)詞的正確形式填空：

1. The bike __________(fix) up by Xiaoming yesterday.

2. Shields ________ (use) ?for protecting people’s body in the past.

3. Last year, a picture _________(put) up on the ?blackboard.

4. She said French______________ (speak) in France.

5. Teenagers _______________(allow) to ?choose their own clothes two years ago.

... ... ...

Homework

Suppose you are alone on a tiny island. What inventions would you like to have on the island with you? Write a short passage.

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