八年级英语下《Unit9Haveyoueverbeentoamuseum-SectionAGrammarfocus4a-4c》-25

现在完成时一、学习目标：1、知识目标：记住现在完成时的构成和三种基本用法；说出现在完成时和一般过去时的区别；2、水平目标：能应用现在完成时表达自己做过的事情。能解答考察现在完成时的题目。二、重点：现在完成时的构成和三种基本用法三、难点：现在完成时和一般过去时的区别四、教学过程：（一（一）结构：肯定句式：现在完成时的肯定句式是如：①Wehavejustfinishedourhomework．②Shehasgonehome．否定句式：现在完成时的否定句式是如：①Wehaventstudiednit2yet②Thetrainhasn'tstoppedyet.疑问句式：一般疑问句式是把助动词have或has提到主语之如：Haveyoureadthisstorybookyet？其肯定回答用

否定回答用.其肯定回答用

否定回答用..”有时用 ,cnotyet.或 ,cnever.特殊疑问句及反意疑问句结构如下：Whathaveyoudonewithmybike?You'vereadthisstorybook,haven'tyou?现在完成时句式中的have或has是助动词，has用于第一人称单数，其它人称一律用—。定义：注意：“已经练习：定义：注意：“已经练习：现在完成时表示到现在为止已经完成或仍在持续的动作、状态；强调对现在的影响或联系。1）现在完成时的一般疑问句往往在句末加yet。2）把现在完成时的一般疑问句译成汉语时，往往译成 过吗？”了吗？等。1.A：Haveyouever

B：No,I’venever_____(visit)thehistorymuseum?(be)there2.Ihavebeentotheartmuseum.(改为一般疑问句) youever theartmuseum?3．—Hassheeverbeentothespacemuseum?—Yes， ．(作肯定回答).have，been，you，the，to，GreatWall(？)(连词成句).Theyhavebeenhereforthreemonths.(改为同义句)Theycameherethreemonths ．(二)合作交流过去分词(规则变化)1)一般在词尾直接加-ed,eg：worked,visited,asked,played,stayed2)以不发音的字母e结尾的，直接在词后加d,eg：likedlivedmoved3)末尾只有一个辅音字母的重读闭音节词,双写该辅音字母,再加ed,eg：stoppeddroppedrobbed4)以“辅音字母+y”结尾，变y为i，再加ed,eg：carried，worried，tried，cried过去分词(不规则变化)详见教材P136-P137AAA型costcostcostAAB型beatbeatbeatenABA型becomebecamebecomeABB型bringbroughtbroughtABC型beginbeganbegun写出下列词的过去分词workcrylikehelpstaycookbegivemake_findhearcut(三)课堂探究练习1：用already,yet,ever,never,just填空Haveyouseenthefilm( )?Haveyoudoneyourhomework( )?-Not( ),Iwilldoitaftersupper.Haveyou( )beentoEngland?-No,( ).Ihave( )finishedreadingthebook.Ihave( )paidforthecar.练习2：用for,since填空Thewindhasblown( )2hours.Thedoghasstayedthere( )itateitsdinner.Theteacherhasthoughtabouttheproblem( )yesterday.Thehorsehasrun( )quitealongtime.Theduckshaveswum( )thirtyminutes.Thepoorchildhasworntheoldclothes( )7yearsold.havebeento,havebeenin,havebeenHavebeento去过某地，现在不在那里IhavebeentoParis.NowIamstayinginLuoyang.Havebeenin\at一直呆在某地，后接地点(in增大地点 at加小地点)IcametoLuoyangin2019.SoIhavebeeninLuoyangfor4yearsalready.Havebeen后接名词和表状态的词组Ihavebeenateachersince2019.IhavebeenatNo.1MiddleSchoolfor2years.练习3：Someofushave Luoyangforonlyaweek.Susanhas inthisbandforoverfiveyears.Myfatherhas Guangdongseveraltimes.Ithas alongtimesinceIfirstmetJohnny.HelovesBeijingandhehas therequiteafewtimes.Judiehasalways agoodstudentandherclassmateslikeher.Tonyhas Americabefore,sothistimehewilltraveltoFrance.Betty’s athomeforthreedays.Shedoesn’tfeelinglikegoingout.Thebosshas theofficesinceearlythismorning.Heworkshard.(四)、现在完成时和一般过去时的区别现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，所以它不能和过去具体的时间连用,而过去时能够.一般过去时常和过去时间短语连用。He(work)inourschoolforo〃eyear.He(come)toourschoollastyear/in2019.They (cook)thesupperalready.They(cook)thesupperhalfanhourago.巩固练习You’veneverseensuchawonderfulfilmbefore, ?Ahaven’ytouBhaveyouCdoyouDdon’tyou--AnnhasgonetoShanghai.---So herparents.A.doB.doesC.hasD.haveIhavewatchedthegame.--When you it?AhavewatchedBdowatchCdidwatchDwillwatchMr.Green inChinasincefiveyearsago.AlivedBhaslivedClivesDisgoingtoliveHisgrandma fortwoyears.AdiedBhasbeendeadCwasdeadDhasdiedWhereisHanMeinow?---She toShanghai.Shewillbebackintwodays.AhasgoneBhasbeenCgoesDhadgone--- totheUnitedStated? No,never,butIwenttoCanadaafewyearsago.A.DidyougoB.DoyougoC.HaveyoubeenD.HaveyougoneYouhaven’tchangedyourmind, ?AdoyouBareyouChaveyouDdidyou拓展延伸中考链接：（21永州）-youevertotheGreatWall?-Yes，Threetimes．（）A．Has，beenB．Have，beenC．Have，gone（21黑龙江）-MayIspeaktoMr.Lee?-Sorry，he Harbin，he thecityfortwodays．（）A.hasbeento；hasbeeninB.hasgoneto；hasbeentoC.hasgoneto；hasbeenin（21宁夏）-Look!Someonetheclassroom.-Well，itwasn'tme.Ididn'tdoit.（ ）A.iscleaningB.wascleaningC.hascleanedD.willclean（21威海）---Isthatanewcoat?---No，I itforalongtime.（）A.boughtB.haveboughtC.havehad（21武汉）Idon'tfeel