高中英语现在完成时的被动语态学案
（语法复习）
1、复习被动语态1)
被动语态的结构：be + p、p、2)
一般现在时被动语态的结构：am/is/are (not)+p、p、3)
一般过去时被动语态的结构：was/were (not)+p、p、4）含有情态动词被动语态的结构：
can/could/may/might/will/would/shall/should/must/need(not )+be + p、p、5）一般将来时被动语态的结构：will (not)/be (not)
to+ be+ p、p、
2、用所给词的正确行使填空1)
Running races (hold)
on the playground yesterday、2)
Food (serve)
between12:00 and14:00 every day、3)
Nobody can (allow)
to enter the stadium without a ticket、4)
Whoever breaks the law, he (punish)、Suggested answers:1)
were held2)
is served3)
will be allowed4)
will be punished Step2 语法学习
1、DiscoveringLook at the following sentence, paying attention to the underlined part、EXAMPLE: Over time I have been changed a lot、 Go back to page18 to read the passage Who am I ?, pick out the sentences in the present perfect passive voice and translate them into Chinese、
2、ThinkingLet students look at the tense used in the sentences they picked out and think over this question: What is the structure of the present perfect passive voice?
3、 Summing upThe structure of the present perfect passive voice is “have/has+ been + p、p、”、 It is a combination of the present perfect tense (have/has + done) and the passive voice (be + p、p、)、Turn to page87 and look at the chart of the present perfect passive voice、现在完成时的被动语态的构成（以动词ask为例）肯定式
否定式疑问式I havebeen asked…You have He/She/It hasWe haveYou have They haveI havenot been asked…You have
He/She/It hasWe haveYou have They have Have I Have you
been asked…?Has he/she/itHave weHave yourHave they Step3 Grammar practice Finish the exercise2 on page
21、Exercise1 Change the following sentences into the present passive voice、
1、My friend has bought a new personal computer、
2、The shop has repaired my computer very quickly、
3、 An unknown virus has just attacked my computer、
4、 We have not solved the problem yet、
5、 The company has given its computers away to a local school、
6、 The scientists have developed a kind of intelligent robot、Suggested answers:
1、A new personal computer has been bought by my friend、
2、 My computer has been repaired by the shop very quickly、
3、 My computer had just been attacked by an unknown virus、
4、 The problem has not been solved by us yet、
5、 Its computers have been given away to a local school by the company、
6、 A kind of intelligent robot has been developed by the scientists、Exercise2 改错
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 built 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、
5、The computer was used every day since we bought it、 The computer has been used every day since we bought it、
6、A lot of e-mails had written on the computer in the past5 years、 A lot of e-mails have been written on the computer in the past5 years、。