人教版八年级下册Unit-8-语法

第三课时：SectionA(GrammarFocus-4c)Unit8HaveyoureadTreasureIslandyet？现在完成时(一）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。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。动词构成：have/has+v过去分词havebreakfastIhavejusthadmybreakfast.(现在我不饿)I’mnothungrynowmovedherein2004IstilllivehereIhavelivedhereforthreeyears.Ihavelivedheresince2004/threeyearsago.nowpast现在完成时的结构考点1肯定句主语＋have/has＋动词的过去分词＋其他.eg:Ihavealreadyfinishedmyhomework.我已经完成了我的作业。否定句主语＋have/has＋not＋动词的过去分词＋其他.eg:Ihavenotheardfromhimyet.我还没收到他的来信。一般疑问句和简略回答Have/Has＋主语＋动词的过去分词＋其他？Yes，主语＋have/has.No，主语＋have/hasnot.Eg:—HaveyoueverbeentoBeijing？你曾去过北京吗？—Yes，Ihave.是的，我去过。/No，Ihaven't.不，我没去过。havenot常简略为haven't，hasnot常简略为hasn't。注意：典例Monica,youtheexam!Congratulation！A.passB.havepassedC.willpassD.arepassingB【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。already与yet在现在完成时中的用法考点2alreadyadv.已经；早已通常用于肯定句中，一般用于have/has后，实义动词前，也有放在句尾的情况。Ihavealreadyhadbreakfast.我已经吃过早饭了。yetadv.还；已经用于否定句和疑问句中，一般用在句末。Ihaven'tdonemyhomeworkyet.我还没有做作业。典例—Hasyoursisterfinishedreading？—Yes.Shehasfinishedit.A.yet；yetB.yet；alreadyC.already；yetB【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。一般过去时与现在完成时的区别考点3(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:Isawthisfilmyesterday.我昨天看了这部电影。Ihaveseenthisfilm.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，lastweek，threedaysago，in1990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inthepast...years/weeks，sofar等时间状语连用。eg：Tomwrotealettertohisparentslastnight.昨晚汤姆给他父母写了一封信。Theweatherhasbeensohotsofarthissummer.到目前为止，今年夏天天气一直很热。典例IthebookclublastweekandI_______twobooksalready.A.join；readB.joined；readC.joined；havereadD.joined；hasreadC【点拨】本题用寻找题眼法。由句中时间状语lastweek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。1.A：Wouldyoulikesomethingtodrink？B：No，thanks.I'vejustdrunksometea.（just/drinksometea）2.A：Iheardyoulostyourkey._________________？（find）B：No，notyet.3.A：DoyouknowwhenTomisleaving？B：.（already/leave）A：When？（leave）B：Thismorning.Usethewordsinbracketstocompletetheconversations.4aHaveyoufounditHehasalreadyleftdidheleave4.A：Isyoursistergoingtothemovieswithustonight？B：No.___________________________.（already/seethefilm）5.A：Whatdoyourparentsthinkaboutourplan？B：I___________________________.（not/tellthem/yet）ShehasalreadyseenthefilmhavenottoldthemyetFillintheblankswiththecorrectformsofthewordsinbrackets.4bSally（love）reading.Inthemorning,shereadsthenewspaperandintheeveningshereadsbooks.She______already（read）morethan100differentbooks！Herfavoritekindofbooksissciencefiction.Sheisinterestedinscienceandtechnologyandlovestoimaginewhattheworld（be）likein50years.She（finish）readingabookaboutrobotslastweekand（write）loveshasreadwillbefinishedwillwriteabookreportaboutitnextweekforherFrenchclass.Everytimesheisinthelibrary,Sallylooksatthemanybooksshe_____________（notread）yetandshecan'twaittoreadthem！hasnotread一、单项选择1．Ican'tfindmywalletanywhere.I'msureI________it.A.lostB.willloseC.loseD.havelost【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。D2．—Whenwillyouhandinyourbookreport?—Sorry,I'mnotsure.I________writingityet.A．didn'tfinishB．don'tfinishC．hadn'tfinishedD．haven'tfinishedD【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．—________Internetbusiness________traditionalbusinessinthepastfewyears?—Notreally.A．Does；beatB．Will；beatC．Has；beatenD．Is；beatingC【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inthepastfewyears可判断出用现在完成时。4．—________youever________thenewMinyuanStadium？—No,Ihaven't.A．Do;visitB．Have;visitedC．Did;visitD．Are;visitingB5．WilliamShakespeare________forover400years,buthisworksstillhavegreatinfluencetoday.A.diedB.wasdyingC.hasdiedD.hasbeendeadD【点拨】考查现在完成时态。句意：威廉·莎士比亚已经去世400多年了，但是他的作品在今天仍然有巨大的影响。结合语境可知用现在完成时态。die是非延续性动词，应用hasbeendead表状态，故选D。6．TimhasalreadygonetoEngland.(改为否定句)Tim________________toEngland________.7．Hercousinshaveleftthere.(改为一般疑问句)________hercousins________there?8．Momcleanedtheroomyesterday.(改为现在完成时)Mom________________theroom.9．Whatishedoingnow？(用thesedays改写句子)What________he________________thesedays?二、按要求完成句子hasn'tgoneyetHavelefthascleanedhasbeendoing10．Thethreestudentshavebeentogetherfor3hours．(对画线部分提问)________________________thethreestudents________together?11．我已经吃过早餐了。I________already________mybreakfast.12．他以前读过那本书。He________________thatbookbefore.Howlonghavebeen三、根据汉语意思完成句子haveeatenhasread13．我朋友还未离开。Myfriend________________yet.14．我还没有找到丢失的钥匙。I________________thelostkeys.15．你决定要去哪里了吗？________you________wheretogo?hasn'tlefthaven'tfoundHavedecided返回1.熟记本课时的词汇2.完成本课时的课后作业(ppt+word)