文档介绍：该【高中英语Unit3ComputersLearningaboutLanguage课件必修2 】是由【胜利的果实】上传分享，文档一共【22】页，该文档可以免费在线阅读，需要了解更多关于【高中英语Unit3ComputersLearningaboutLanguage课件必修2 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。Unit 3　ComputersLearning about Language
语法精讲·思维构建
观察上面对话, 并类比填空。
1. First as a PC and then as a laptop, I _____________(use) in offices and homes
since the 1970s.  
2. Since the 1970s many new applications _______________(find) for me.  
3. I _____ even ________(put) into space rockets and ____(send) to explore the Moon
and Mars.
have been used
have been found
have
been put
sent
一、现在完成时的被动语态的各种句式
肯定式
主语+ have/has been done. . .
否定式
主语+ have/has not been done. . .
一般疑问式
Have/Has +主语+ been done. . . ?
特殊疑问式
特殊疑问词+ have/has +主语+ been done. . . ?
*Already this year, 115 measles cases have been reported in the USA.
今年美国已经报道了115例荨麻疹病例。
*Moran says one of the problems with jazz today is that the entertainment aspect of the music has been lost. Moran说现在的爵士乐存在的问题之一就是它的娱乐因素已经没了。
*The construction of the bridge has not been finished.
桥的建设还没有完成。
*Has it been announced when the plane is to take off?
有没有宣布飞机何时起飞?
*The dream was so true at the beginning, but why has it been broken into pieces? 梦当初那么真, 为何裂为碎片?
F
T
➝The children _______________the good news yet.  
②变为一般疑问句。
➝________________________the good news yet?  
③对the children进行提问。
________________the good news yet?
haven’t been told
Have the children been told
Who has been told
(2)I’m sorry, but the letters _________________yet.  
很抱歉, 这些信件还没有被打印出来。
(3)The plan ________________for nearly two hours.  
这项计划已被讨论了近两个小时了。
(4)She _____________________since then.  
从那时候起, 她就没来过信。
haven’t been typed
has been discussed
hasn’t been heard from
二、使用现在完成时的被动语态的几点注意事项
1. 只带有一个宾语的动词变为被动语态时, 将主动语态的宾语变为被动语态的主语。
*Mobike, a new kind of public bike rental service, has been put into use in some big cities.
摩拜单车, 一种新型公共自行车租赁服务, 已经在一些大城市投入使用。