人教版八年级下册Unit8语法课件.ppt（纯ppt,可能不含音视频素材）

1、Unit 8 Have you read Treasure Island yet？第三课时：第三课时：Section A(Grammar Focus-4c)现在完成时现在完成时(一）一）moved here in 2004 have breakfast I still live here Im not hungry now past now 1.过去的动作对现在造成的影响或结果。和过去的动作对现在造成的影响或结果。和already，never,ever,just,before,yet等状语连等状语连用。用。I have just had my breakfast.(现在我不饿现在我不饿)2.过

2、去开始，持续到现在的动作或状态，过去开始，持续到现在的动作或状态，常与常与for或或since引起的一段时间状语连用。引起的一段时间状语连用。I have lived here for three years.I have lived here since 2004/three years ago.动词构成：动词构成：have/has+v过去分词过去分词 考点 1 现在完成时的结构现在完成时的结构 主语have/has动词的过去分词其他.肯定句 eg:I have already finished my homework.我已经完成了我的作业。主语have/hasnot动词的过去分词否定句 其

3、他.eg:I have not heard from him yet.我还没收到他的来信。一般疑Have/Has主语动词的过去分词其他？问句和简略回答 Yes，主语have/has.No，主语have/has not.Eg:Have you ever been to Beijing？你曾去过北京吗？Yes，I have.是的，我去过。/No，I havent.不，我没去过。have not 常简略为havent，has not 常简略为 注意：注意：hasnt。典例典例 Monica,you B the exam!Congratulation！A.pass B.have passed C.wi

4、ll pass D.are passing【点拨】本题用【点拨】本题用语境判断法语境判断法。由。由Congratulation！可知是已！可知是已经通过考试了，对现在的影响，用现在完成时。经通过考试了，对现在的影响，用现在完成时。考点 2 already与与yet在现在完成时中的用法在现在完成时中的用法 already adv.通常用于肯定句中，I have already had 已经；早已 一般用于have/has后，breakfast.我已经实义动词前，也有放 吃过早饭了。在句尾的情况。yet adv.还；用于否定句和疑问句 I havent done my 已经 中，一般用在句末。ho

5、mework yet.我还没有做作业。典例典例 Has your sister finished reading B？Yes.She has finished it.A.yet；yet B.yet；already C.already；yet【点拨】本题用【点拨】本题用语法判定法语法判定法。already常用于肯定陈述句中，常用于肯定陈述句中，yet多用于否定句或疑问句中。多用于否定句或疑问句中。考点 3 一般过去时与现在完成时的区别一般过去时与现在完成时的区别(1)一般过去时表示过去某时发生的动作或单纯叙述 过去的事情。现在完成时强调过去的动作对现在造成的影响或结果。eg:I saw this

6、 film yesterday.我昨天看了这部电影。I have seen this film.这部电影我已经看过了。(2)一般过去时常与具体的表示过去的时间状语（如：yesterday，last week，three days ago，in 1990等）连用；现在完成时不与表示明确的过去的时间状语连用，但可以与in the past.years/weeks，so far等时间状语连用。eg：Tom wrote a letter to his parents last night.昨晚汤姆给他父母写了一封信。The weather has been so hot so far this sum

7、mer.到目前为止，今年夏天天气一直很热。典例典例 I C the book club last week and I _ two books already.A.join；read B.joined；read C.joined；have read D.joined；has read【点拨】本题用【点拨】本题用寻找题眼法寻找题眼法。由句中时间状语。由句中时间状语last week可知可知第一个空应用一般过去时；由句中第一个空应用一般过去时；由句中already可知第二个空应可知第二个空应用现在完成时。用现在完成时。4a Use the words in brackets to complete

8、 the conversations.1.A：Would you like something to drink？B：No，thanks.Ive just drunk some tea.（just/drink some tea）2.A：I heard you lost your key._Have you found it？（find）B：No，not yet.3.A：Do you know when Tom is leaving？He has already left.（already/leave）B：A：When did he leave？（leave）B：This morning.4.A

9、：Is your sister going to the movies with us tonight？B：No._.She has already seen the film（already/see the film）5.A：What do your parents think about our plan？have not told them yet B：I _.（not/tell them/yet）4b Fill in the blanks with the correct forms of the words in brackets.Sally loves （love）reading.

10、In the morning,she reads already read （read）more than 100 different books！the newspaper and in the evening she reads books.She_ has Her favorite kind of books is science fiction.She is interested in science and technology and loves to imagine what the world will be （be）like in 50 years.She finished

11、（finish）will writereading a book about robots last week and （write）a book report about it next week for her French class.Every time she is in the library,Sally looks at the many books she _has not read（not read）yet and she cant wait to read them！一、单项选择一、单项选择 1I cant find my wallet anywhere.Im sure I

12、_it.D A.lost B.will lose C.lose D.have lost【点拨】考查句子的时态。句意：我到处都找不到我的钱【点拨】考查句子的时态。句意：我到处都找不到我的钱包了。我确信我包了。我确信我_它。从句意可知在此强调对现在它。从句意可知在此强调对现在所造成的影响或结果：找不到了。因此用现在完成时，故所造成的影响或结果：找不到了。因此用现在完成时，故选选D。2When will you hand in your book report?Sorry,Im not sure.I _writing it yet.D Adidnt finish Bdont finish Chadn

13、t finished Dhavent finished【点拨】此题用【点拨】此题用正确把握语境法正确把握语境法。根据。根据yet判断，应用现在判断，应用现在 完成时，且是否定句。句意：完成时，且是否定句。句意：你什么时候交你的读书你什么时候交你的读书 报告？报告？对不起，我不确定。我还没有写完。对不起，我不确定。我还没有写完。3_ Internet business _traditional C business in the past few years?Not really.ADoes；beat BWill；beat CHas；beaten DIs；beating【点拨】考查时态的辨析。问

14、句句意：在过去的几年中互【点拨】考查时态的辨析。问句句意：在过去的几年中互 联网商业击败了传统的商业吗？由时间状语联网商业击败了传统的商业吗？由时间状语in the past few years可判断出用现在完成时。可判断出用现在完成时。B 4_ you ever_ the new Minyuan Stadium？No,I havent.ADo;visit BHave;visited CDid;visit DAre;visiting D 5William Shakespeare _ for over 400 years,but his works still have great influe

15、nce today.A.died B.was dying C.has died D.has been dead【点拨】考查现在完成时态。句意：威廉【点拨】考查现在完成时态。句意：威廉莎士比亚已经去莎士比亚已经去 400多年了，但是他的作品在今天仍然有巨大的影响。结多年了，但是他的作品在今天仍然有巨大的影响。结世世合语境可知用现在完成时态。合语境可知用现在完成时态。die是非延续性动词，应用是非延续性动词，应用 has been dead表状态，故选表状态，故选D。二、按要求完成句子二、按要求完成句子 6Tim has already gone to England.(改为否定句)hasnt g

16、one yet Tim _ _ to England _.7Her cousins have left there.(改为一般疑问句)_ her cousins _ there?Have left 8Mom cleaned the room yesterday.(改为现在完成时)has cleaned Mom _ _ the room.9What is he doing now？(用these days改写句子)been doing has What_ he_ _ these days?10The three students have been together for 3 hours(对画

17、线部分提问)_ _ _ the three students How long have _ together?been 三、根据汉语意思完成句子三、根据汉语意思完成句子 11我已经吃过早餐了。eaten I_ already_ my breakfast.have 12他以前读过那本书。has read He _ _ that book before.13我朋友还未离开。hasnt left My friend_ _ yet.14我还没有找到丢失的钥匙。I_ _ the lost keys.havent found 15你决定要去哪里了吗？_ you _ where to go?Have decided 返回 1.1.熟记本课时的词汇熟记本课时的词汇 2.2.完成本课时的课后作业完成本课时的课后作业(ppt+word)(ppt+word)