Learning about Language教案2

新课标人教版必修二Unit3 Computers Learning about Language The General Idea of This Period：

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. Teaching Aims：

1.Help the students to learn to use some useful words and expressions. 2.Enable the students to learn how to use the present perfect passive voice. Teaching Important Point：

The use of the present perfect passive voice. Teaching Difficult Points：

How to master the usages of some important words and phrases and the present perfect passive voice. Teaching Methods：

1.Task-based learning. 2.Cooperative learning. 3.Explanation and practice. Teaching Aids：

1.A tape recorder. 2.A multimedia. Teaching Procedures：

Step 1 Revision T：Boys and girls，in last period we learned something about the history and development of computers.Now who would like to retell the text with the help of these figures? S1：Let me try.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. T：Congratulations!You’ve done very well.Now try to do the same to your partners，OK! Step 2 Words and Expressions Task 1 Finish the Ex.1 on Page 20 T：Please turn to Page 20 and finish Discovering useful words and expressions.At first，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.Who can?Volunteers! Check the answers together. Possible answers: 1.revolution 2.network 3.simplify 4.calculate 5.mobile

6.solve 7.explore 8.totally 9.anyhow 10.finance Task 2 Finish the Ex.2 on Page 20 T：Well done.Now please look at Ex 2. and complete the passage with some of the words above.Pay attention to the use and the forms of those words. Possible answers: explore，

Web，

technology，

artificial，

applications，

intelligent ，logically，

reality. Task 3 Finish the Ex.1 on Page 21 T：Please turn to Page 21 and let’s finish Ex.1. Look at the following sentences:Over time I have been changed a lot.paying attention to the underlined part.then pick out more than two sentences in the Present perfect passive voice from the reading passage. Step 3 Grammar—The Present Perfect

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

1.I have been used in offices and homes since the 1970s. 2.Since the 1970s many new applications have been found for me. 3.I have also been put into robots and used to make mobile phonesas well as help with medical operations .

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 practise the present perfect passive voice. Task 1 Finish the Ex.2 on Page 21 T：Please turn to Page 21.Let’s finish Discovering useful structures. At first，look at Ex.2.According to examples，change the following sentences into the present perfect passive voice.Put the verbs into the correct form. Task 2 Finish the Ex.1on Page 57

T：Now，please turn to Page 57.Finish using structures.First，look at Ex.1 and change the following sentences according to the model，and pay attention to the passive voice form.First do the exercise individually，and then check your answers with your partners.After that we’ll check the answers in class. Task 3 Explanations

现在完成时的被动语态

一、现在完成时的被动语态的各种句式

肯定式否定式一般疑问式特殊疑问式主语＋have/has been done...主语＋have/has not been done...Have/Has＋主语＋been done...？疑问词＋have/has＋主语＋been done...？

The city has been swept through by heat wave recently. 最近炎热横扫了这座城市。

His work has not been finished．

他的工作尚未完成。

Have the new booking systems for tickets been used? 新的订票制度已在使用中了吗？

二、现在完成时的被动语态的用法

1．表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果，通常与already，yet，never，recently等副词及时间状语so far，by now，up till now，since...，before...等连用。

The doctor hasn't been sent for yet. 还没有派人去请医生。(现在应派人去请医生) 三、使用现在完成时的被动语态要注意以下几点

1．现在完成时的被动语态的两个助动词，即have/has 和

been，两者缺一不可。

2．与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在的情况没有联系，而现在完成时的被动语态则强调与现在情况的联系。

This novel was finished last year. 这部小说是去年写的。

This novel has been finished. 这部小说已经完成了。

3．一些特殊动词，如borrow，finish，begin，buy，start，return，marry，open，join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。

4．用在时间或条件状语从句中，表示将来某时要完成的动作，即用现在完成时的被动语态代替将来完成时的被动语态。

You can go home as soon as your task has been finished.你的任务一完成就可以回家。

Task4 直击高考

Ⅰ.单项填空

1．(2013·北京高考)Shakespeare's play Hamlet

into at least ten different films over the past years. A．had been made

B．was made C．has been made

D．

would be made

2．—Will you lend me some paper? —Sorry，mine

．

A．is running out of B．

has been run out C．has run out D．

has run out of 3．—Would you like to go to the cinema with me tomorrow afternoon? —I'd like to，Mum，but I

to a party by Jane.It is her birthday. A．am invited

B．

was invited C．will be invited D．

have been invited 4．Great changes

in my hometown and a lot of factories

．

A．have been taken place；are being set up B．have taken place；have been set up C．are taken place；had been set up D．had taken place；will be set up

5．Till now，three films

in that small village this month. A．have shown B．

have been shown C．were shown D．

will be shown

6．I want to buy that kind of cloth because I

the cloth

well. A．have told；washes B．have been told；washes C．was told；washed D．have been told；is washed

7．(2011·天津高考)In the last few years thousands of films

all over the world. A．have produced B．

have been produced C．are producing D．

are being produced 8．—How many times

not to play with fire? —I'm sorry.I'll never do that again. A．do you tell

B．

had you told C．are you told

D．

have you been told

9．When you get the paper back，pay special attention to what

．

A．have marked B．

have been marked

C．had marked

D．

had been marked

10．—How long

into practice? —Since 2000. A．was the project put B．will the project be put C．had the project been put D．has the project been put

(Possible answers：CCDBB BBDBD)

Step 4 Homework 1.

Do more exercises to consolidate the present perfect passive voice. 2.

Review the Using language of this Unit. Bb writings:

the Present Perfect Passive Voice The structure of the present perfect passive voice: 肯定式否定式一般疑问式特殊疑问式主语＋have/has been done...主语＋have/has not been done...Have/Has＋主语＋been done...？疑问词＋have/has＋主语＋been done...？