现在完成时的被动语态(31PPT)课件.ppt

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1、基于情境的英语语法教学,第十一章 动词的语态,现在完成时的被动语态,6.The Present Perfect Passive Voice,What has changed in the classroom?,guessing game,lead in,have / has beendone(过去分词),1.The lights,have been turned off.,2.The blackboard,has been cleaned.,3.The door,has been closed.,4.The windows,have been opened.,5.The floor,has b

2、een cleaned.,现在完成时表示动作发生在过去, 到现在已经完成或对现在仍有影响。,注：现在完成时,past,present,future,标志词：already，so far，yet，lately/recently，these days/years/weeks，since+时间点，for+时间段等。,现在完成时的被动语态强调一个发生在过去的被动性动作持续到现在或对现在造成的影响或结果。其构成是: have/has been + done。例如： 1. The dirty clothes have been washed. 脏衣服都已经洗了。 2. The plan has been

3、studied by the experts for three times. 这项计划已经由专家研究过三次了。,现在完成时的被动语态,Can you make more sentences, using “have/has been done” ?,Practice I,Tall buildings (build) everywhere.,have been built,Shopping centers (build).,have been built,Some factories (set up) to improve economies.,have been set up,economy

4、 knm n. 经济；节约；理财,The road _(widen).,has been widened,More dustbins ( place)on the streets.,dust 灰尘bin 箱子，容器；dstbn,have been placed,More and more trees and flowers ( plant)on the either side of the roads.,have been planted,improve memory,Tall buildings (build) everywhere.,have been built,Shopping cen

5、ters (build).,have been built,Some factories (set up) to improve economies.,have been set up,The road _(widen).,has been widened,More dustbins ( place)on the streets.,have been placed,More and more trees and flowers ( plant)on the either side of the roads.,have been planted,Practice II：Correct the s

6、entences,1.Great changes have been taken place in my hometown.2. Many measures (措施) have taken. 3.Citizens have been request not to throw rubbish and litter everywhere. requested4.The number of cars have been limited to reduce our pollution. has5.More and more people has sensed the importance of the

7、 environment protection. have 6.People have became responsible for building a beautiful hometown. become,been,I used to live in a small town with trees around. There were no tall buildings and the streets were narrow. But in recent years, great changes (take place) in my hometown.,Great Changes in M

8、y Hometown,have taken place,Tall buildings (build) everywhere as well as shopping centers.Also some factories (set up) to improve economies.Roads (widen).In order to keep the city clean and tidy, many measures (take).,have been built,have been set up,have been widened,have been taken,Citizens (reque

9、st) not to throw rubbish and litter everywhere. Therefore, more dustbins (place)on the streets. More and more trees and flowers (plant) on the hills and either side of the roads.,have been requested,have been placed,have been planted,In addition,the number of cars (limit) to reduce our pollution. Mo

10、re and more people (sense) the importance of the environment protection and (become) responsible for building a beautiful hometown in a few years.,has,have sensed,have become,been limited,memory challenge,I used to live in a small town with trees around. There were no tall buildings and the streets

11、were narrow. But in recent years, great changes (take place) in my hometown. Tall buildings (build) everywhere as well as shopping centers. Also some factories (set up) to improve economies. Roads (widen).In order to keep the city clean and tidy, many measures (take).,Great Changes in My Hometown,Ci

12、tizens (request) not to throw rubbish and litter everywhere. Therefore, more dustbins (place)on the streets. More and more trees and flowers (plant) on the hills and either side of the roads. In addition,the number of cars (limit) to reduce our pollution. More and more people (sense) the importance

13、of the environment protection and (become) responsible for building a beautiful hometown in a few years.,How has the place changed?,Use these words:add, change, open, paint,put, turn on, take away,The windowThe capThe lightThe basketballThe sweaterThe paintingTwo chairsThe booksThe dishes,have/has b

14、een,homework (1),Correct the sentences,1. A personal computer has bought by us.2. Many problems has been found with our new computer.3. A PC has been builded the way we wanted.4. Our computer just has been joined to the Internet.5.The computer had used every day since we bought it.6. A lot of e-mail

15、s had written on the computer in the past 5 years.,homework (2),answers：1.A personal computer has been bought by us.2.Many problems have been found with our new computer.3.A PC has been built the way we wanted.4.Our computer has just been joined to the internet.5.The computer has been used every day since we bought it.6.A lot of e-mails have been written on the computer in the past 5 years.,Thank you!,