Learning about Language优秀教学设计

高中英语人教版必修2 Unit 3 Computers Period 2 Learning about Language教学设计

Aims：

By the end of the lesson, the students will be able to:

1. discover useful words and expression 2. discover useful structures 3. learn to use The Present Perfect Passive Voice

Procedures：

Step 1 Warming up by reading to the tape

To begin with, turn to page 18, listening to and reading to the recording of the text WHO AM I? Attention goes to the pauses and intonation, as well as the pronunciation of the reader.

Step 2 Discovering useful words and expressions

In pairs do the exercises 1 and 2on pages 20 and 21.

1. Fill the word or expression for each of the following meanings from the text. 1. _________ complete change in ways 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 Answer key for Exercise 1:

1. revolution

2. network

3. simplify

4. calculate

5. mobile

6. solve

7. explore

8. totally

9. anyhow

10. finance

2. Complete the passage with the words below.

My brother was very interested in computers and enjoyed writing programs of his own. He used to download information from the Internet and made good use of it. He liked to ________ the World Wide _______ and used the Internet to communicate with computer programmers all over the world. When he went to university he studied IT (information ___________) and developed a special in ________intelligence. After developing special ____________of the computer, he hopes to design an __________ robot which can think ________ and look like human being, but in ________ he was a long way to go. Answer key for Exercise 2:

explore

web

technology

artificial

applications

intelligent

logically

reality Step 3 Learning about grammar

1. Passive Voice—Overview

Tense or Model

Simple Present

Simple past

Simple Future

Tense orModel

Passive Sentence

The TOEFL exam is given every six months.

The TOEFL exam was given last month.

The TOEFL exam will be given every year.

Passive Sentence

Present Continuous

The TOEFL exam is being given every year.

Present perfect

Past perfect

The TOEFL exam has been given every year since 1950.

The TOEFL exam had been given before the Vietnam War occurred.

2. The Present Perfect Passive Voice

The structure of The Present Perfect Passive Voice is: have/ has ＋

been＋~ed

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。

Understanding the structure of the present perfect passive voice 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。如:

[误] Such a man has been hardly believed.

[正] Such a man has hardly been believed. （2）并不是所有动词都有被动语态

1) happen, take place, break out, belong to, cost, last等不及物动词或词组无被动语态。如：

[误] Great changes have been taken place in China since 1978.

[正] Great changes have taken place in China since 1978. 2）open, break, drop等不强调动作发出者时常用主动语态。

（3）短语动词不可分割或省略其中的介词或副词。如：

The patients have been taken good care of. （4）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。若要表达相应的意思，

则需改换动词或时态。如：

My brother has had (不能用has bought) this bike for almost four years. How long ago was this book bought? （5）主动语态变被动语态的方法

1) 把主动语态的宾语变为被动语态的主语。

2) 把谓语变成被动结构

(be＋过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。

3) 把主动语态中的主语放在介词by之后作宾语, 将主格改为宾格。例如：

All the people laughed at him.

He was laughed at by all people.

They make the bikes in the factory.

The bikes are made by them in the factory. 4) 双宾语动词变被动语态可将其中的一个宾语变为主语，

另一个保留不动。

主动：I have given him the key. 被动：He has been given the key. 被动：The key has been given (to) him. 5) 带复合宾语的动词变被动语态时, 只能将宾语变为主语, 原来的宾补保留不动，

改称主语补足语。

主动：I have asked her to help you. 被动：She has been asked to help you. 3. Structures （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 English? 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?

4. Practice （1）Turn the following into the Passive Voice.

1）We have planted some trees around the lake.

Some trees have been planted around the lake .

2）

My father has locked the door.

The door has been locked.

3）

Someone has turned off the light.

The light has been turned off. 4）We will hold the Olympic Games in Beijing in the year 2008.

The Olympic Games will be held in Beijing in the year 2008.

5）They have rebuilt the bridge.

The bridge has been rebuilt. 5. Exercises （1）

–Hi, Tom, you look tired.

-- Of course. I have been _________ (paint) the living room all day. （2）

--Did you move into the new house?

-- No. The rooms have not been ________ (paint) yet. （3）You can’t move in .The house is ______________ (paint).

（4）---How long ago _____ these eggs ________ (hatch)?

---Perhaps 15 days. 6. Correction （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 builded 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.

Step 4 Homework 1. Review what we have learned this class. 2. Finish exercise 2 on page 21.