Unit 3 The Internet Grammar ppt课件-（2019）新人教版高中英语必修第二册.pptx

1、Unit 3THE INTERNETGrammar: The Present Perfect Passive VoiceI have often taken pictures of the little girl since I met herThey have run many times since they enter high school.1. We have seen the movie Fast and Furious 8 already.2. She has learned English since she was five.3. There are countless ar

2、ticles telling us how the Internet has made our lives more convenient.4.But the Internet has done much more for people than simply make life more convenient.5. Her company has become quite successful.6. Jan has started taking online classes to learn more about how to use the Internet to make society

3、 better. 现在完成时概念现在完成时概念1：for: 后接一段时间后接一段时间，如，如three years, a long timee.g. I have known you for a long time.since:自从自从 后接过去的时间点后接过去的时间点/动作动作e.g. I have not seen him since we met last week.AB常用的时间状语有：常用的时间状语有：have learnedfor over ten yearsfor three yearssince three years agoPractice: Finish the sente

4、nces have just opened The door is not closed now.） 现在完成时概念现在完成时概念2：常用的时间状语有：常用的时间状语有：常与连用，如: these days, up to now, by now, lately, already, never, these days, up to now, by now, lately, already, never, ever, just, yet, before, recently, so far, in the ever, just, yet, before, recently, so far, in t

5、he past few past few yearsyears等,表示“”所发生的动作. have read . has been . 发生过若干次发生过若干次3. 现在完成时用于谈论 的事情.现在完成时概念现在完成时概念3：never, twice, three times, many times等等常用的时间状语有：常用的时间状语有： 现在完成时谓语动词的构成现在完成时谓语动词的构成 1 have / has 和以前一样选择：当主语是 _ 用has , 用have第三人称单数其他人称2 done在现在完成时中叫 ，原型是do/does。过去分词have/has+ done现在完成时的基本句

6、型现在完成时的基本句型现在完成时现在完成时 (Active Voice)肯定式肯定式 have/has done否定式否定式 have/has not done一般疑问句一般疑问句 have/has + 主主 + done？特殊疑问句特殊疑问句 疑问词疑问词- have/has + 主主 + done？句型转换。句型转换。1. I have waited here for two hours. 2. She hasnt told us the news yet. 3. Has the rain already stopped?4. She has done her homework. 5. H

7、e has lived in ShangHai since he left Beijing. 动动 词词 填填 空：空： 1._ you _(clean) the room? Yes, we _(do) that already. When _ you _(do) it? We _(do) it an hour ago.2._ he _(see) this film yet? Yes. When _ he _(see) it? He _ it last week. 3. How many times _you_(be) there? Havecleanedhave donediddodidHa

8、sseendidseesawhavebeen下一页上一页主菜单4. I _ (read) the novel twice. Its interesting.5. She _(go) to Paris, hasnt she? Yes. How _ she _(go) there? She _(go) there by air.6. So far, many countries _(develop) their software programs.7.Mr Chen _(give)up smoking last year.8.Mr Chen _(give) up smoking since las

9、t year.have readhas gonedidgowenthave developedgavehas given下一页上一页主菜单15Translate them into English. 1.你以前做过风筝吗? 2.我从来没有见过这么奇怪的人3.到现在你学了多少英语单词?4.这部电影他已经看过5遍了. 5.最近有没有读一些有趣的书?6.自从她搬到上海以后, 我就没见过她. Have you made a kite before ? Ive never seen such a strange man. How many English words have you learned s

10、o far?He has already seen this film 5 times. Have you read any interesting books recently ? I havent met her since she moved to Shanghai . 被动语态被动语态 构成：构成：be及物动词的过去分词。及物动词的过去分词。用法：用法：(1)动作的执行者不知道是谁或难以说明时常用被动语态，动作的执行者不知道是谁或难以说明时常用被动语态，(2) 当强调动作的承受者时当强调动作的承受者时,用被动语态用被动语态,如如:Street lights are often turn

11、ed on at six in winter. This kind of bicycle is not sold in our shopDiscovering现在完成时现在完成时 (Passive Voice)(Passive Voice)肯定式肯定式 have/has have/has beenbeen donedone否定式否定式 have/has not have/has not been been donedone一般疑问句一般疑问句 have/has + have/has + 主语主语 + + beenbeen donedone特殊疑问句特殊疑问句 特殊疑问词特殊疑问词+have/h

12、as+have/has+主语主语+ +beenbeen donedoneHe has confirmed the updated news.He has confirmed the updated news.Passive voice:Passive voice:The updated news The updated news has been confirmed has been confirmed by him.by him.The updated news The updated news has not been confirmed has not been confirmed by

13、 him.by him.HasHas the updated news the updated news been confirmed been confirmed by him ?by him ?What What has been confirmed has been confirmed by him ?by him ?主动态主动态被动态被动态一般现在时一般现在时一般过去时一般过去时一般将来时一般将来时现在进行时现在进行时过去进行时过去进行时现在完成时现在完成时过去完成时过去完成时时态时态语态语态do/doesam/is/are+ done didwas/were + doneshall/

14、will doshall/will + be doneam/is/are doingam/is/are + being donewas/were doingwas/were + being donehas/have donehas/have + been donehad donehad + been doneThe first subway to cross the Yangtze River . 第一条横穿长江的地铁已经开工。(肯定式)When and where to spend our holiday yet. 我们还没决定何时去何地度假。(否定式) the construction o

15、f the underwater tunnel ? 水下隧道的建造完工了吗?(一般疑问式) parts of Gansu Province by strong winds and heavy snowfall in the past two days? 在过去的两天里,甘肃省的什么地方受到了大风和大雪侵袭? (特殊疑问式)has been startedhasnt been decided Has been finished What have been hit 实战演练. 单句填空1. When you get the papers back, pay special attention t

16、o what (mark). 2. In recent years many sports clubs (run) to make a profit. 3. I want to buy this kind of cloth because I (tell) that the cloth washes well. 4. Over the past ten years, this town (hit) twice by earthquakes. has been marked have been runhave been told has been hit 5. A lot of damage (

17、cause) by a snowstorm which hit the north of the country last night. 6. I like these songs very much which (teach) recently on the radio. 7. When and where our professor will give us a lecture_(not decide) yet. 8. Great changes (take) place in my hometown since 2016. has been caused have been taught

18、 hasnt been decidedhave taken . 翻译句子1. 问题已经解决了。_2. 他们还没有被告知这个令人兴奋的消息,是吗?_3. 他的新小说被译成英语了吗?_The problem has already been solved. They havent been told the exciting news yet, have they? Has his new novel been translated into English yet? 4. 这辆汽车用了多长时间了?_5. 这项计划已被讨论了近两小时了。_How long has the car been used? The plan has been discussed for nearly 2 hours.