Unit 3 Computers教案

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.)
step5. homework
page 22. writing: write a report about your choice and try to use the present perfect passive voice as well as the useful words and expressions that have been mentioned above. in your report.