Unit 3 Computers Learning about Language 课件(23张PPT)

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名称 Unit 3 Computers Learning about Language 课件(23张PPT)
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科目 英语
更新时间 2020-04-22 16:28:18

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(共23张PPT)

必修2 Unit 3 Computers
Learning about language II




have/has been done







Look at the following sentence.
Pay attention to the underlined part.
Over time I have been changed quite a lot.


present perfect passive voice.
Pick out more sentences in
1. Over time I have been changed quite a lot.
2. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.
3. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told!
Sentences from reading:
4. Since the 1970s many new applications have been found for me.
5. I have also been put into robots and used to make mobile phones as well as help with medical operations.
6. I have even been put into space rockets and sent to explore the Moon and Mars.
Sentences from reading:
Can you make a sentence in present perfect passive voice?
1. my homework, finish.
2. the book, put, on the desk.
3. the thief, take away, police.
Can you make a sentence in present perfect passive voice?
4. by now, the message, send to, everyone.
5. so far, many species(物种), kill.
6. the cup, use, for many years.
7. he, reject, for 5 times.

P21 Exercise 2
1.My friend has bought a new personal computer.

2.The shop has repaired my computer very quickly.

3.An unknown virus has just attacked my computer.
A new personal computer has been bought by my friend.
My computer has been repaired by the shop very quickly.
My computer has just been attacked by an unknown virus.
P21 Exercise 2
4.We have not solved the problem yet.

5.The company has given its computers away to a local school.

6.The scientists have developed a kind of intelligent robot.
The problem has not been solved by us yet.
The computers have been given away to a local school by the company.
A kind of intelligent robot has been developed by the scientists.

Look at the way your face has been washed.
Look at the way your hair has been combed.
Look at the way your shoes have been cleaned.
You’d better do them again.



Look at the way the flowers have been planted.
Look at the way the grass has been cut.
Look at the way the path has been swept.
I hope that you’ll come here again.



Show TIME
Some poems
from you


Look at the way your homework has been done.
Look at the way your dishes have been washed.
Look at the way your room has been cleaned.
You’d better do them again.
Look at the way the garden has been built.
Look at the way the trees have been planted.
Look at the way the tower has been painted.
I hope that you’ll come here again.
Homework

1.Finish exercises 1-3 on page 57 in your Workbooks.
2. Preview “Andy — The Android”.
Thank you!