人教版八年级下册Unit8语法课件.ppt

Unit 8,Have you read Treasure Island yet,？,第三课时：,Section A,(Grammar Focus-4c),现在完成时,(,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,already,，,never,ever,just,before,yet,等状语连,用。,I have just had my breakfast.,(,现在我不饿,),2.,过去开始，持续到现在的动作或状态，,常与,for,或,since,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：,have/has+v,过去分词,考点,1,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/has,not,动词的过去分词,否定句,其他,.,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：,hasnt,。,典例,Monica,you,B,the exam!Congratulation,！,A.pass,B.have passed,C.will pass D.are passing,【点拨】本题用,语境判断法,。由,Congratulation,！可知是已,经通过考试了，对现在的影响，用现在完成时。,考点,2,already,与,yet,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。,homework yet.,我还没有做作业。,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,语法判定法,。,already,常用于肯定陈述句中，,yet,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,(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 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 summer.,到目前为止，今年夏天天气一直很热。,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,寻找题眼法,。由句中时间状语,last week,可知,第一个空应用一般过去时；由句中,already,可知第二个空应,用现在完成时。,4a,Use the words in brackets to complete 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,：,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.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,（,finish,）,will write,reading 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,1,I cant find my wallet anywhere.Im sure I_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,包了。我确信我,_,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,选,D,。,2,When will you hand in your book report?,Sorry,Im not sure.I _writing it yet.,D,A,didnt finish B,dont finish,C,hadnt finished D,havent finished,【点拨】此题用,正确把握语境法,。根据,yet,判断，应用现在,完成时，且是否定句。句意：,你什么时候交你的读书,报告？,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.,A,Does,；,beat B,Will,；,beat,C,Has,；,beaten D,Is,；,beating,【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,in the past few,years,可判断出用现在完成时。,B,4,_ you ever_ the new Minyuan,Stadium,？,No,I havent.,A,Do;visit B,Have;visited,C,Did;visit D,Are;visiting,D,5,William Shakespeare _ for over 400 years,but,his works still have great influence 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,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,世,合语境可知用现在完成时态。,die,是非延续性动词，应用,has been dead,表状态，故选,D,。,二、按要求完成句子,6,Tim has already gone to England.(,改为否定句,),hasnt gone,yet,Tim _ _ to England _.,7,Her cousins have left there.(,改为一般疑问句,),_ her cousins _ there?,Have,left,8,Mom cleaned the room yesterday.(,改为现在完成时,),has cleaned,Mom _ _ the room.,9,What is he doing now,？,(,用,these days,改写句子,),been doing,has,What_ he_ _ these days?,10,The three students have been together for 3 hours,(,对画线部分提问,),_ _ _ the three students,How long have,_ together?,been,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.,熟记本课时的词汇,2.,完成本课时的课后作业,(ppt+word),