Learning about Language名师教学实录

Unit 3 Computers The 3rd period: learning about Language

---the Present Perfect Passive Voice

Goals: 1. Learn the Present Perfect Passive Voice. 2. Help the students master the way of using the correct voice, telling the differences between the active voice and the passive voice.

Teaching Procedures: Step 1: Revision and lead-in 1.

Check the homework first

Ex1:

1 totally

2 revolution

3 artificial intelligence

4 birth

5 simple-minded

6 go by

7 deal with 8 network

9 truly

10 anyway

Ex2: revolution; network; went by; totally; truly; simple-minded; Anyway; deal with

Ex3: 1 totally

2 amazed

3 exciting

4 excited

5 cheaply

6 unlucky 2. Lead-in Say: 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 ?

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.) Many high buildings have been set up. Lots of flowers and trees have been planted. A new bridge has been completed….

Step2: 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.

Step3: Practice

(1)..pick out more than two sentences in the present perfect passive voice from the reading passage?(Ex.1on page 21) 1. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s. 2. Over time my memory has developed

so much that, like an elephant, I never forget anything I have been told.

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

(2).Change the following sentences into the Present Perfect Passive Voice.(Ex.1on page 21)

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

2. My computer has been repaired by the shop very quickly. 3. My computer has just been attacked by an unknown virus. 4. The problem have not been solved by us yet. 5. The computers has been given away to a local school by the company. 6. A kind of intelligent robot has been developed by the scientists.

Step4: Discussion : learning the structure 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。

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

Step5:

Do some exercises:

Choice

Step6:

Homework 1.Finish exercises 3 on page 21. 2.Revise the Present Perfect Passive Voice.