现在完成时八分钟微课脚本冀教版英语八年级下册

教师姓名学校名称微课名称PresentPerfectTense视频长度录制时间知识点来源学科：英语年级：八年级ObjectivesTointroducestudentstotheconceptandstructureofthepresentperfecttense.Toenablestudentstounderstandandusethepresentperfecttensecorrectlyindifferentcontexts.Toimprovestudents’listening,speaking,reading,andwritingskillsthroughpresentperfecttensepractice.DifficultpointMasterthesentencestructureofPerfectPresentTenseContentsIntroductiontothePresentPerfectTenseBriefoverviewofthetenseanditspurpose.Explanationofthebasicstructure:"have/has+pastparticiple".UsesofthePresentPerfectTense教学过程内容时间Leadin(Theteacherwillplayashortvideo,includinganEnglishsong,andthelyricsare“I'vepaidmydues/I'vedonemysentence/Butmittednocrime/Andbadmistakes/I'vemadeafew/I'vehadmyshareofsandKickedinmyface”)20sPresentationTeacher:Hieveryone!Ihopeyouwouldenjoythesongandyoumustfindoutthatsomewordsinthelyricsaremarkedinred,likeI'vepaidmydues/I'vedonemysentence.WecallthemPresentPerfectTense现在完成时.Let’slearnthetwomainusagesofPresentPrefectTense.现在完成时的用法一：表示过去发生或已经完成的动作对现在造成的影响或结果。E.g.Ihavealreadycleanedmyroom.表示已经打扫了，房间是干净的。Ihaveneverseenthesea.表示之前没看过，现在看到了。Teacher:注意划线部分的副词already，never，我们称为现在完成时的标志词，常见的有：already：“已经”，通常用在肯定句中。Ihavealreadyfinishedmyhomework.yet:“仍然，还”，用在疑问句和否定句中。Haveyouhadyourbreakfastyet?ever:“曾经”，通常用于疑问句和肯定句中。Ihaveeverseenthisfilm.never:“从来不”，用于否定句中。Ishefamous?Ihaveneverheardofhim.现在完成时的用法二：表示过去已经开始，持续到现在并且有可能持续下去的动作。E.gIhavereadthebookforalongtime.It’sreallyinteresting.读书这一动作从上个月开始，这个月仍在读，并且会继续读下去。TomhaslivedinBeijingsince2020.Tom从2020年开始住在北京，还会继续住下去。此时现在完成时常与“for+时间段”，“since+时间点/从句”等时间状语连用。since+过去的时间点：Ihaveworkedheresince2020.for+一段时间：Ihaveworkedherefor4years.[Attention]此时谓语不可用非延续性动词。非延续性动词：不能延续，一瞬间就结束的动作。常见：e,go,arrive,leave,begin,start,buy,fall,join,die,getup,bee,borrow,lend,find,finish等。这些动词可用于现在完成时，说明某个动作的结果还在。但不能和表一段时间的状语（howlong,since,for）连用。Hehaseback.(√）Hehasebackfortwohours.(×）非延续性动词延续性动词e/gobeherediebedeadborrowkeepbuyhavejoinbeinleavebeawayTeacher:Hehasebackfortwohours.(×）Hehasbeenherefortwohours.(√）现在完成时的结构Teacher：Havingseensomanyexamples,wecanconcludethestructureofPresentPerfectTense.肯定句：主语+have/has+动词过去分词否定句：主语+haven’t/hasn’t+动词过去分词一般疑问句：Have/Has+主语+动词过去分词Have/has此时为现在完成时，无实际意义。Teacher：Pleaselookattheboardandlet’strymoreexercisestogether.【Practice】I____________（未完成）myhomeworkyet.（haven’tfinished）______________finishedhishomeworkyet?(Hashe)Yes,hehas.No,he_______.(hasn’t)Wehavelearned1000words______October.（since）Thebookmustbegreat.Mysister______itfivetimes.（2023河北中考真题）readsB.hasreadC.isreadingD.wasreading(Teacher:根据标志词fivetimes，强调动作完成的次数，可知用现在完成时hasread，选B。）Sorry,I_______amistake.Letmecorrectit.（2022河北中考真题）willmakeB.ammakingC.wasmakingD.havemade(Teacher:根据题干中Letmecorrectit让我更正它。可知我在过去犯了一个错误，对现在造成的影响是我要更正它，表示过去发生的事情对现在造成的影响是现在完成时态，该时态的结构是主语+have/hasdone，则D选项符合题意。William_______sixbooks,andallofthemarebestsellers.（2021河北中考真题）willwriteB.iswritingC.haswrittenD.waswriting(Teacher:根据后半句汉语意思:都是畅销书,说明前