Learning about Language课件配套优秀

Step1. Lead-in Review some kinds of computers. Ask the questions:

Are you familiar with these computers?

Can you call them? desktop PC

laptop/ notebook

palmtop

WW PC

wrist-worn/wearable PC Step 2. Give students some sentences . A wrist-worn PC

has

been invented recently. A pen-like computer has

already

been

developed The new campus of Ou Hai No.1 Senior Middle school has already been built . The houses

have been destroyed

by the storm. Step 3. Make more sentences. The Suntown ______________ in Hua Zhou. Many high buildings ____________ there. A big swimming pool

_____also __________. 已经被建起来了。

Lots of beautiful flowers and trees

（已经被种了）。

A new bridge

（已经被完工了）。

Step 4. 在课文中找出所有包含现在时完成时态的句子，把它们写下来,并找出他们的共同之处。

1.

Over time I have been changed quite a lot. 2. …, I have been used in offices and homes since the 1970s. 3. Since the 1970s, many new applications have been found for me. 4. I have also been put into robots and used to make mobile phones as …

Step5. Learning the structure: 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。如：

eg 1) The child has been taken good care of by Grandma Wang all these years.

2）A notice has been put up on the wall. Step6.Practice

Change the following sentences into the Present Perfect Passive Voice. 1. We have completed all the preparations for the task, and we’re ready to start. 2. This company has produced

new types of computers. 3. They have interviewed several teachers for the job. 4. George has sent some texts and pictures to his friend’s

cellphone.

5. They have developed some programmes for the human resource department of their company. Step7. Homework 1.Exercise 2 and3 on page 21. 2.同步作业写到37页.