高中英语人教版 (2019)必修 第二册Unit 3 The internet背景图课件ppt

这是一份高中英语人教版 (2019)必修 第二册Unit 3 The internet背景图课件ppt，共17页。PPT课件主要包含了already，yet等内容，欢迎下载使用。

▶Have the new bking systems fr tickets been used? 新的订票系统已经在使用了吗?▶Hw lng has the battery been used? 电池已经使用多久了?【探究总结】
答案： have/has been dnehave/has nt been dneHave/Has疑问词+have/has
【应用实践】翻译句子。①你的车已经修好了。 _____________________________________________________________②地面还没打扫干净。 _____________________________________________________________
Yur car has been repaired.
The flr has nt been cleaned.
③那些房间粉刷了吗? _____________________________________________________________④这部电影已经放映多久了?_____________________________________________________________
答案： ③Have thse rms been painted?④Hw lng has the film been n?　
二、现在完成时的被动语态的三个用法1. 表示过去发生的动作对现在造成的影响与结果。【观察思考】▶It is s late that the dr has already been lcked. 太晚了,门已经被锁上了。▶His paper hasn’t been handed in yet. 他的论文还没有交上。【探究总结】当动词为非延续性动词时,可与_________或______连用,但不能与fr或since引导的表示一段时间的状语连用。 
【应用实践】单句改错。①The club has been funded fr five years. _______________________________________________________________②My reprt has been handed in fr a week._______________________________________________________________
答案：①The club was funded five years ag.②My reprt was handed in a week ag.
2. 表示一个被动的动作或状态开始于过去并向后持续。【观察思考】▶His cmputer has been repaired fr tw hurs. 他的电脑已经修了两个小时了。▶The valuable bk has been kept in the library since it was bught last year. 这本有价值的书自从去年买来就保存在这家图书馆里。【探究总结】表示一个被动的动作或状态开始于过去,持续到现在,并有可能持续下去,常与_________或_________引导的时间状语连用或用于“Hw lng ”句型中。 
答案：fr　since
【应用实践】完成句子。①One hundred wrds __________(已经学了) since last week. ②The ld temple has been built __________(两年) and it is still in cnstructin. 
答案：①have been learned　②fr tw years
3. 用于时间或条件状语从句。【观察思考】▶Mr Feng will g hme t celebrate the New Year’s Eve as sn as his perfrmance has been finished.冯先生的表演一结束,他就回家庆祝跨年。
【探究总结】用在时间或条件状语从句中,表示将来某时已完成的动作,即用现在完成时的被动语态代替将来完成时的被动语态。【应用实践】单句语法填空。①Dn’t g ut t play until all f yur hmewrk __________(finish). ②We wn’t start the wrk until all the preparatins __________(make). 
答案：①has been finished　②have been made
三、使用现在完成时的被动语态的四个注意事项【观察思考】▶His puzzle has been wrked ut. 他出的谜已经被解出来了。▶The park was pened t the public last year.去年这家公园向公众开放。(说明动作发生于过去)▶The park has been pened t the public.这家公园已向公众开放。(说明动作发生于过去,但对现在有影响,即现在公园已开放)
▶The prject was started almst ne year ag.工程开始于差不多一年以前。▶Dn’t wrry. Yur luggage has already been taken gd care f. 不要担心。你的行李已被妥善照看。【探究总结】(1)现在完成时的被动语态的两个部分,即have/has和been,两者缺一不可。(2)与一般过去时的被动语态的区别:一般过去时的被动语态强调发生在过去,不强调动作或状态与现在的联系,而现在完成时的被动语态则强调与现在的情况有联系。
(3)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。(4)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。【名师提醒】①常与现在完成时的被动语态连用的时间状语:already、 yet、 recently、 lately、 since then、 ever、 s far、 up t nw、 fr a lng time、 by nw、 in recent years、 in/during/ver/fr the past/last ... years/weeks/mnths。
②被动结构与系表结构的区别:被动结构中过去分词强调动作,而系表结构中过去分词相当于形容词,强调主语的特点或状态。The field has been watered twice. 田地已被浇水两次。(强调water的动作已完成)The field is cvered with snw. 田地被雪覆盖。(强调田地目前的状态)③在现在完成时的被动语态的附加疑问句中,否定时使用hasn’t/haven’t,肯定时使用has/have。His hmewrk has been finished, hasn’t it?The bks haven’t been sld ut, have they?
【应用实践】(1)句型转换(将下列句子改为被动语态)。①They have finished the wrk ahead f time. _____________________________________________________________②Over time, peple have changed the cmputer a lt. _____________________________________________________________③His parents have made Jack wrk harder than befre. _____________________________________________________________ ④Have they returned the bk yet? _____________________________________________________________
⑤Have yu fund ways t make waste water clean? _____________________________________________________________⑥Li Hua’s bss has praised him fr his excellent wrk. _____________________________________________________________
答案：①The wrk has been finished ahead f time.②Over time, the cmputer has been changed a lt.③Jack has been made t wrk harder than befre.④Has the bk been returned yet?
⑤Have ways been fund t make waste water clean?⑥Li Hua has been praised by his bss fr his excellent wrk.
(2)完成句子。①Shakespeare’s play Hamlet 　　　　　　(拍成) int at least ten different films ver the past years. ②Up t nw, the phnes 　　　　　　　　(使用) all ver the wrld. ③S far this nvel 　　　　　　　(translate) int several languages. ④　　　　 this table 　　　　　　(bk) yet? (3)翻译句子。①他们结婚10年了。 _____________________________________________________________ ②那位老人被精心照顾了10年。 _____________________________________________________________