Learning about Language评课稿

Unit 3 Computer Learning about language Teaching goals 1.Discovering useful words and expressions

2.Learn grammar “The Present Perfect Passive Voice”

Aids Multimedia facilities, tape-recorder, photos, diagrams

Procedures I.Discovering useful words and expressions complete change in ways

1.

of thinking, working, etc. 2. ________ connected computer system 3. ________ to make things easier 4. ________ to find the answer using numbers 5.

can be moved easily from place to place 6.________ to work out the answer to a problem 7._______ to travel around an area to find out about it

8. ______ completely 9. _______ anyway 10. _______ activity of managing money II.Discovering useful structures 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. III. The Present Perfect Passive Voice现在完成时的被动语态

现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响. 1. 现在完成时被动语态肯定句

主语+has/ have been +P.P.+... (P.P.=动词的过去分词形式) Her motorbike has been stolen.

她的摩托车被盗了。

All the offices have been linked by computer. 所有的售票处由计算机联网工作。

2. 现在完成时被动语态否定句

主语+has/ have +not+ been+ P.P.+... The task has not been finished yet. 任务尚未完成。

Many skilled workers have not been trained in the company. 这家公司并没有培养多少熟练工人。

3. 现在完成时被动语态一般疑问句

Has he(she, it,单数名词)+been+P.P.+...? Has a new computer been bought? 买了一台新电脑吗? Have they been sent abroad to study Eng-lish? 他们已经被派往国外学英语了吗? 4. 现在完成时被动语态特殊疑问句

疑问词+have (has)+主语+been+ P.P.+...? What has been bought by Tom? 汤姆已经买了什么东西? Who have been helped by the new computer? 谁已经得到这种新计算机的帮助? How many buildings have been built in

this school?这所学校已经建造了多少座大楼?

Where has the car been repaired? 这辆小汽车已经在哪里修理好了?

IV. Practice:Choose the best answer. 1. A personal computer has bought by us. A personal computer has been bought

by us. 2. Many problems has been found with our new computer.

Many problems have been found with

our new computer. 3. A PC has been built the way we wanted. A PC has been built the way we wanted. 4. Our computer just has been joined to the internet. Our computer has just been joined to the internet. 5. The computer was used every day since we bought it. The computer has been used every day since we bought it. 6. A lot of e-mails had written on the computer in the past 5 years. A lot of e-mails have been written on the computer in the past 5 years. V. Homework: Try to remember the grammar rules and do exercises 1, 2 and 3 on page 21.