Unit3 The Internet现在完成时的被动语态ppt课件-（2019）新人教版高中英语必修第二册.pptx

1、Unit 3 The Internet现在完成时与现在完成时的被动语态语法感知1. There are countless articles telling us how the Internet has made our lives more convenient.2.But the Internet has done much more for people than simply make lfie more convenient.3. Much has been writeen about the wonders of the World Wide Web.4.Peoples live

2、s have been changed by online communities and social networks.此两句中的时态是：此两句中的时态是：现在完成时态现在完成时态此两句中的时态是：此两句中的时态是： 现在完成时的被动语态现在完成时的被动语态肯定式：肯定式：主语主语+have/has+V-过去分词过去分词(done)否定式：否定式：主语主语+have/has+not+V-过去分词过去分词. 一般疑问句：一般疑问句：Have/Has+主语主语+V-过去分词过去分词. 特殊疑问句：特殊疑问句： 疑问词疑问词+have/has+主语主语+V-过去分词过去分词.时态构成现在现在将来

3、将来过去过去 Present Perfect Tense 现在完成时现在完成时图解时态1表示动作在说话之前已经完成，强调过去的动作强调过去的动作对现在造成的影响或产生的结果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so far，by now，up till now，before.等连用。The project has already been finished.工程已完成了。(结果是现在不用做这项工作了)The doctor hasnt been sent for yet.还没有派人去请医生。(现在应派人去请医生)含义用法2表示一个

4、动作或状态开始于过去，持续到现在开始于过去，持续到现在，并有可能持续下去。常与for或since引导的时间状语连用，或用于How long.？句型中。The machine has been tested for two hours.这台机器已经测试了两个小时了。(可能还会继续被修)3用在时间或条件等状语从句中状语从句中，表示将来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。You can go home as soon as your work has been finished. 你的工作一完成就可以回家。 常与现在完成时连用的时间状语常与现在完成时连用的时间

5、状语already 已经已经(肯定句肯定句) yet 已经（否定句或者疑问句）已经（否定句或者疑问句）recently/lately 最近最近 since then 从那时起从那时起ever since 自那以来自那以来 ever 曾经曾经so far 迄今为止迄今为止 for a long time 很长一段时间很长一段时间by now 到现在为止到现在为止 in recent years 在最近几年里在最近几年里in/during/over the past/last years在过去的几年里在过去的几年里时间状语1与一般过去时的区别一般过去时所表示的动作或状态与现在的情况与现在的情况没有

6、没有联系联系，而现在完成时则强调与现在的情况与现在的情况有联系有联系。The museum was opened to the public last year.去年这家博物馆向公众开放。(说明动作发生于过去)The museum has been opened to the public.这家博物馆已向公众开放。(说明动作发生于过去，但对现在有影响，即现在公园已经开放了)难点突破2.非延续性动词不与段时间状语语连用如borrow，finish，begin，buy，marry，open，等构成的现在完成时不能与表示一段时间的状语连用。若要表达相应的意思，则要换换成延续性成延续性动词动词或改变句

7、式或改变句式。The experiment was finished two weeks ago. finish是非延续性动词It is two weeks since the experiment was finished. 3动词短语中的介词或副词不可省略。It is said that the case has been looked into.据说已经调查了这个案件。4. 带有双宾语的动词变为被动语态时,一般将间接宾语间接宾语变为被动语态的主语主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。The company has given him a chance to

8、work abroad recently. He has been given a chance to work abroad recently (by the company)A chance to work abroad has been given to him recently (by the company)has been sentwas builthave been bought巩固练习巩固练习had been soldhave been addedhas been regardedhas been markedhas been translatedhas been cleane

9、dhave been wateredSome difficult questions have been asked by them. Millions of pounds worth of damage has been caused by thestorm. 高考链接高考链接1. (2021浙江浙江6月高考月高考) It doesnt impress like George Washingtons plantation on the Potomac, but Lincolns home in downtown Springfield, Illinois，_ _ (prove)irresis

10、tible to visitors since it opened to the public.has proved2.(2019全国卷)I love coming here and seeing my family and all the friends I _ make) over the years.have made3.(2019全国卷)In recent years some Inuit people in Nunavut _ (report) increases in bear sightings around human settlements,leading to a beli

11、ef (believe) that populations are increasing.have reported4. (2018全国卷全国卷)Diets have changed in China and so too has its top crop. Since 2011, the country _ (grow) more corn than rice.has grown5. (2018浙江高考浙江高考)While regularly eating out seems to _ (become)common for many young people in recent years, its not without a cost.has becomeThank you