人教版高中英语必修2《Unit3Computers》教案

人教版高中英语必修2《Unit3Computers》教案

人教版高中英语必修2《Unit 3 Computers》教案【一】

教学准备

教学目标

1. To practise listening comprehension.

2.To practise making decisions and reasoning

教学重难点

1. To practise listening comprehension.

2.To practise making decisions and reasoning

教学工具

课件

教学过程

Step1. revision

1. check the homework exercises.

1). It has been reported that children will be offered free

education.

It has been reported that free education will be offered to

children.

2). It has been said that we will be offered the latest computer

science course book.

It has been planned that the latest computer science course

book will be offered to us.

3). I have been told by Peter that I will be lent his notebook

computer for a week.

I have been told by Peter that his notebook computer will be

lent to me for a week.

2. Question: What can computers be used as?

Step2. Lead-in

As we know, science and technology is developing very fast and computers have become smaller and smaller. They have

been used in many fields. So, the 21st century is the century of

information technology What does it mean? Does information

technology/ IT only mean things like computers? Of cause not.

Actually, it means more than computers. Computers are just one

kind of IT. What else do you know is part of IT?

(TV, radio, CD-ROM, DVD, books……)

Step3. Listening (SB)

1. Pre-listening: What are the changes brought by different

forms of IT ?

What are the advantages and disadvantages of them ?

2. While-listening:

Go through the chart and make sure the students look at the

chart before they listen to the tape. (This is to sharpen their

attention and listen for the answers. This will also help them get

the gist of the text.) Then Listen to the tape and finish filling in

the chart. (If necessary, play the tape for several times.)

Say: After listening to their talk, we know all kinds of IT have

both disadvantages and advantages.Let’s check the answers

together.

Type of IT Advantages Disadvantages

TV You can both listen and watch. You cannot write to friends.

Web You can find information. It is very expensive.

Radio You can listen to English. You cannot watch a film.

Book You can get information. Sometimes it is out of date.

3. Post-listening:

1) (pair work): decide which type of IT is best for you to use

right now. Make your choice and give your reasons by using the

following expressions.

I think that…. In my opinion, ….

I believe that….

I agree because….

I disagree because….

I’ve decided that….

2) (group work): Discussion :

Computers are useful and have brought us lots of good

things, but they also cause bad effects. What attitude should we

have towards the computer? (Make good use of it but never get

trapped by it.)

Step4. Speaking

1. Pre-speaking

Say: From what we have learn, we should admit that

computers and the web have a great influence on the school

education as well as people’s life. It has come into people’s

everyday life and many families hold computers in their homes.

Now there is a task for you.

2. While-speaking

1) Situation: You have been asked by your parents to help

choose computers for your home. You and your friend have

looked at several computers. Talk about the special things each

computer can do. Make a decision about which kind of computer

to buy and explain why.

Information input: Show students some pictures of different

computers (desktop computer & laptop computer & …)

Language input: Useful expressions (Repeat it to strengthen

students’ ability of use it.)

Supporting an opinion Challenging an opinion

I think that … , because … Perhaps, but what if / about …?

First, … Have you thought about …? One reason is that … What makes you think that …?

I think it is better because… I don’t like it because….

(Pair work )Use the expressions to support your opinion or

challenging other’s opinions.

2) Oral report: (individual work )

Do an oral report to your father and start your report like this:

I looked at many different computers. The one I have chosen is

the PEP personal computer. One of the main reasons is that it is

suitable for homes. I found that…

3. Post-speaking

Conclusion—What useful expression do we use to make a

decision and reason?

(In this way, they can review and use the words and phrases

again.)

Step6 Pre-writing

Say: Imagine what problems and delights this android might

have to deal with while it is serving you. Try yourself in someone

else’s shoes is an important way of understanding how other

people feel.

Then discuss: You are an android. You work for a family with

one child who is very spoiled. The parents want you to do

everything for them. The parents are nice, but they often ask you