Learning about Language教案和学案内容

Unit 3 Computers

Learning about Language ---the Present Perfect Passive Voice Teaching Aims:

1.To learn to use The Present Perfect Passive Voice

2.To discover useful words and expression

3.To discover useful structures

Teaching

important points:

1.The Present Perfect Passive Voice

Teaching

difficult

points:

How to help the students master the way of using the correct voice and telling the differences between the active voice and the passive voice.

Teaching Procedures

Step1. Warming up by reading to the tape

To begin with, turn to page 18, listening to and reading to the recording of the text WHO AM I? Attention goes to the pauses and intonation, as well as the pronunciation of the reader.

Step 2. Discovering useful words and expressions

In pairs do the Exercise 1 and 2 on page 20 Answer key for Exercise 1:

1.

revolution

2. network

3. simplify

4.calculate

5. mobile

6.

solve 7. explore 8. totally

9. anyhow

10. finance Answer key for Exercise 2:

(explore, web, technology, artificial, applications, intelligent, logically, reality) Step3. Discovering useful structures 1.

Lead-in Are you familiar with these computers? Can you call them? (ask the Ss to distinguish different types of computers.) Do you know these new inventions of computer ?

1

A wrist-worn PC

has been invented

recently. A pen-like computer has already been developed. (show them some pictures and ask them to make some sentences , using the Present Perfect Passive Voice.) There a beautiful swimming pool has been built . Many high buildings have been set up. Lots of flowers and trees have been planted. A new bridge has been completed. 2.

Discovering Ask the Ss to discover whether these sentences have something in common. Help them to learn the useful structure : the Present Perfect Passive Voice. 3.Give some explanations 1.构成：

主动语态

被动语态

现在完成时

have/has done----------have/has been done He has been sent to study the new technology in the company. The dirty clothes have not been washed. Have the windows been cleaned? How many shopping centers have been built in this city? 2.只有及物动词才有被动语态，不及物动词（词组）没有被动语态, 如:happen, take place, die, appear, disappear, fail, remain, lie, last, sit ,stand, break out, come true, belong to等．如：

What has happened to your brother? 3．但许多不及物动词加介词或副词构成的短语动词，相当于及物动词，也可以有被动语态。

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但短语动词是一个不可分割的整体，变为被动语态时，不可丢掉构成短语的介词或副词。如：

The child has been taken good care of by Grandma Wang all these years. A notice has been put up on the wall. 4.Practice and exercises (1). Can you pick out more than two sentences in the Present Perfect Passive Voice from the reading passage? Answer:

1.

I

have been used in offices and homes since the 1970s. 2.

I

never forget anything I have been told. 3.

Since the 1970s many new applications have been found for me. 4.

I

have also been put into robots. 5.

I

have been put into space rocket. (2).Change the following sentences into the Present Perfect Passive Voice. 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. 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.

Answer:

1.

A new personal computer has been bought by my friend. 2.

My computer has been repaired very quickly. 3.

My computer has just been attacked by an unknown virus. 4.

The problem has not been solved yet.

3

5.

The company’s computers have been given away. 6.

A kind of intelligent robot has been developed by the scientists. Step4: Homework 1.Finish Exercise 1 on P57.

2.Revise the Present Perfect Passive Voice.

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