Unit 3 Computers

但短語動詞是一個不可分割的整體，變為被動語態時，不可丟掉構成短語的介詞或副詞。如：
the child has been taken good care of by grandma wang all these years.
a notice has been put up on the wall
step4: practice and exercises
1.change the following sentences into the present perfect passive voice.
!). we have completed all the preparations for the task, and we’re ready to start.
2). this company has produced  new types of computers.
3). they have interviewed several teachers for the job.
4). george has sent some texts and pictures to his friend’s cellphone.
5). they have developed some programmes for the human resource department of their company.
2.change the following sentences into the present perfect passive voice. put the verbs into correct form.
    recently we have bought a new personal computer. we have used the computer every day since we bought it. we have just joined our computer to the internet. however, we have found many problems with it. so we have decided to ask a professional man to fix it.  soon he has fixed the computer. he has built a pc way we wanted . how excited we are! these days we have written a lot of e-mails on the computer. we have decided to write a report about the positive and the negative effects of using computers.
3. do some exercises: choice
step5: using the structure : play a game—what has been decided.
1. give the ss the situation : get into groups of four. your task is to decide what has been decided for the class .take turns to make the ideas as interesting or as lively as you can.
2. give the ss some examples:
s1: it has been decided that those who do not do heir homework will be asked to return to school on saturday.
s2:it has been decided that those who keep the classroom tidy should be allowed to go home early everyday.
s3:it has been decided …         s4:…                
3. ask them to collect the ones they all like best and be prepared to tell them to the class.
step6: further study:  高考鏈接(this step can be done according to teaching needs.)
1. ---how long _____ at this job?  b
    --- since 1990.
 a. were you employed          b. have you been employed
 c. had you been employed       d. will you be employed
2. when and where to go for the on-salary holiday ___yet. ( 上海春季)   d