高中英语人教版 (2019)必修 第二册Unit 3 The internet精品课件ppt

这是一份高中英语人教版 (2019)必修 第二册Unit 3 The internet精品课件ppt，共17页。PPT课件主要包含了语法导学，◆语法感知，现在完成时的被动语态，◆语法精析，达标检测，happened，have 等内容，欢迎下载使用。

Perid Three　Discvering Useful Structures—The present perfect passive vice
感悟规律 重点难点剖析
感知以下句子，完成方框下的小题
1.以上句子中所使用的时态和语态是 。2.现在完成时的被动语态的构成为： 。
have/has been＋过去分词
现在完成时的被动语态表示到现在为止某事已经被完成或被做。这种语法项目既要表示现在已经完成又要表示被动的含义，因此很多同学在具体运用中容易顾此失彼，难以把握。运用现在完成时的被动语态时应掌握以下几个问题：一、现在完成时的被动语态的常用句式
He has been admitted t the club.他已被接纳为俱乐部成员了。Tm’s nvel has nt been published.汤姆的小说还没有被出版。Has his bike been repaired?他的自行车修好了吗？Wh has been invited?谁受到了邀请？
二、现在完成时的被动语态的用法1.表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果，通常与already，yet，never，recently等副词及时间状语s far，by nw，up till/t nw，since等连用。The rm has already been cleaned.这个房间已经被打扫干净了。(现在已经不用打扫房间了)2.表示一个被动的动作或状态从过去开始一直持续到现在，并可能继续持续下去，常与fr或since等引出的时间状语(从句)连用，或用于hw lng引出的句子中。The machine has been repaired fr tw hurs.这台机器已经被修了两个小时了。(可能还会继续被修)
3.用在条件状语从句中，表示将来某时已经完成的动作。Yu shuldn’t leave schl befre yur hmewrk has been finished.在你的作业没完成之前你不应该离开学校。三、使用现在完成时的被动语态要注意6点问题1.与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在的情况没有联系，而现在完成时的被动语态则强调与现在的情况有联系。The park was pened t the public last year.去年这个公园向公众开放。(说明动作发生于过去)The park has been pened t the public.这个公园已向公众开放。(说明动作发生于过去，但对现在有影响，即现在公园已经向公众开放了)
2.非延续性动词，如brrw，finish，begin，start，buy，marry，pen，jin等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或时态。The wrk was finished tw weeks ag.这项工作于两周前被完成。The wrk has been finished.这项工作已经被完成。3.短语动词是一个不可分割的整体，在被动语态中要保持完整性，其中的介词或副词不可省略。It is said that the prblem has been lked int.据说已经调查了这个问题。
4.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。We have built many huses in the past ten years.→Many huses have been built in the past ten years.5.带有双宾语的动词，如give，send，bring，take，teach，shw，tell，make，sing，write，read，sell，buy，tell，pay，lend，pass，prmise等，变为被动语态时，可将其中一个宾语变为主语，另一个保留不动。 We have given him the bk.→He has been given the bk.→The bk has been given t him.
6.带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾补改为主语补足语。原来省略t的不定式作宾补的，被动语态中要用带t的不定式。 I have tld them t help yu.→They have been tld t help yu.
当堂检测 基础达标演练
1.Jack’s bss has always praised him fr his devtin t wrk.→Jack by his bss fr his devtin t have fund a gd place t build a temple in the village.→A gd place t build a temple in the haven’t yet decided hw t slve that difficult technlgical prblem.→Hw t slve that difficult technlgical prblem yet.4.I have asked her t help yu.→She t help yu.
Ⅰ.用现在完成时的被动语态改写句子
has always been praised
has been fund
hasn’t been decided
has been asked
5.He has given the child sme interesting bks.→The child sme interesting bks.→Sme interesting bks the child.
has been given
have been given t
Li Ming：Hi，Lin Ta.Hw nice t see yu n the first day f the new term!Lin Ta：Yes.Nice t see yu again.Li Ming：I knw that yur parents 6. (wrk) in Yushu fr years.Can yu tell me smething there after the earthquake?Lin Ta：Of curse.Since the earthquake 7. (happen)，many sldiers 8. (send) there，and many kinds f supplies(物资供应) 9.______ (carry) there frm all ver the cuntry.Nw，mst peple there 10. (live) a happy life again.Li Ming：Hw abut the schls there?
Ⅱ.语法填空(用所给词的正确时态、语态填空)
have been wrking
have been sent
been carried
live/are living
Lin Ta：Several new schls 11. (set) up and als sme schls which 12. (damage) in the earthquake 13._______________(rebuild).S all the students can g back t schl t study nw.Li Ming：That’s wnderful.I’m sure their life will be better and better.When will yur parents cme back?Lin Ta：They will be back next mnth.
have been set
were damaged
have been rebuilt