Learning about Language第一课时评课稿

必修2 Unit 3

Computers

Period 3: learning about Language

Teaching

Plan 一、

教学内容分析

This period includes revision of the text, learning about language. From this period the students will learn how to use some of the key words and expressions in the text and do some exercises for consolidation, and learn how to use the Present Perfect Passive Voice. 二、

教学目标

1.

知识目标

Help the students to learn to use some useful words and expressions. Learn the Present Perfect Passive Voice. 2.

能力目标

Help the students master the way of using the correct voice, telling the differences between the active voice and the passive voice.

3.

情感目标

Using the computers properly. Try to express themslves by using the present perfect passive voice. 三、

教学重难点

教学重点：Learn the Present Perfect Passive Voice. 教学难点：How to use the Present Perfect Passive Voice. How to master the usages of some important words and phrases.

四、

教学方法

1. Task-based learning. 2. Cooperative learning. 3. Explanation and practice. 五、教学用具

A multimedia.

A blackboard. 六、教学过程

Step 1: Revision

Task 1: Retell the text according to the key words and phrases. T: Before class, let’s review what we have learnt last yesterday, read the text aloud then try to retell the text according to the key words and phrases. Key words and phrases: Calculating, machine, Analytical Machine, universal machine, mathematical, artificial intelligence, Internet.

In 1642，a calculating machine was used in France. Then in 1922，the Analytical Machine was made by Charles Babbage. It could follow instructions from cards with holes. In 1936，Alan Turing，the real father of computers，wrote a book to describe how computers could be made to work and built a “universal machine”

to solve any mathematical problem. Later，people discovered the computer had “artificial intelligence”. In the 1960s，the computer got his new transistors. Its size

was totally changes at that time. And in the early 1960s，the first family of computers were connected to each other. In 1970s，computers have brought into people’s homes. Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Internet..

Task 2 Check their homework. T：Please turn to Page 20 , look at Ex.1.From the reading passage，find the words and expressions with the following meanings. Now，ten students will be asked to give the words. Check the answers together. Task 2 T: Now please look at Ex 2.

Pay attention to the use and the forms of those words. Step 2 Lead in

T：Boys and girls，now please pay attention to the following sentences in the text：

1.As the years have gone by，I have been made smaller and smaller. 2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet. 3. I have truly been built to serve the human race since my birth. T：What verb tense is used in these sentences? And what verb voice is used in these sentences?

Yes，the present perfect passive voice is used in these sentences. Can you tell us the structure of the present perfect passive voice? Quite right. The structure of the present perfect passive voice is “subject＋have/has been done＋object”. The function of present perfect passive voice is indicating verbs’ the present perfect and the passive voice. OK，let’s practice the present perfect passive voice. Step3 Practice

Task 1 Full fill the blanks according to text. 1.

Over time I have been changed quite a lot. 2.

First as a PC and then as a laptop, 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 well as help with medical operations. 5.

I have even been put into space rockets and sent to explore the Moon and the Mars. T: Now try to sum up the structure of the present perfect passive voice. have / has + been + done

Task 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 new kind of intelligent robot. Check your answer. 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 has not been solved by us. 5. The computers have been given away to a local school by the company. 6.A kind of intelligent robot has been developed by the scientist. 注意：1.副词的位置

often, usually, always, never, hardly, seldom等副词置于have / has和been中间。

For example:

Such a man has hardly been believed.

2. 并不是所有动词都有被动语态

happen, take place, break out, belong

to, cost, last等不及物动词或词组无被动语态。

For example: Great changes have taken place in China since 1978.

Task 3 Translate the following sentences into English. 1.这个实验做得很成功。

2. 新学校已经建成了。

3. 汤姆的小说还没有被出版。

4. 他的自行车修好了吗？

5. 谁受到了邀请？

Check the answers. 1.

The experiment has been done successfully.

2.

The new school has been set up.

3.

Tom’s novel has not been published.

4.

Has his bike been repaired?

5.

Who has been invited? T: Now try to conclude the passive, negative, interrogative and special interrogative forms of the present perfect passive voice. have / has + been + done

(positive form)

have / has + not + been + done

(negative form)

Have / Has +主语+been done+其他

(interrogative form) 疑问词

+ have / has + been + done

(special interrogative form) Step 4 Consolidation Put the Chinese into English to complete the sentences.

1. You can see the house

has not been painted (未油漆) for years.

2. How many workers have been sent (已派遣) to build the railway?

3.

— Why does Mary look so unhappy? — She has been laughed at

(被嘲笑) by her classmates.

4. Have his views been criticized(受到批

判) by them?

5. The two pens have not been taken away (未被拿走) by him.

6. Where has

the television been repaired (已经修理了)? Check the answers by students. Step 5 Further Study

T: Try to do the exercises of NMET, we can learn further. Task 1 单句改错

1.

The novel had been translated into several kinds of languages so far. has 2. The topic has discussed by them for several time

been 3. Recently，a number of accidents have been happened here.

4. The little children have been taken good care since they moved here.

of 5.A lot of animals have been disappeared from the earth up to now.

Task 2 单句语法填空

1.Sarah

has been told/ was told(tell) that she could be Britain’s new supermodel，earning a million dollars in the next year. (2017·全国Ⅲ) 2.In recent years，stress

has been regarded (regard) as a cause of a whole range of medical problems. (2016·上海) 3.Despite the previous rounds of talks，no agreement has been reqached

(reach) so far by the two sides.(2015·天津)

4.In my hometown，there is always a harvest supper for the farmers after all the wheat has been cut (cut).(2015·重庆) 5.We won’t start the work until all the preparations have been made (make). (2014·天津) Step7 Homework Using words and expressions on page 56. Doing exercises on grammar.