Unit10I'vehadthisbikeforthreeyearsSectionA(4a-4c)课件人教版八年级英语下册

GrammarFocus4a-4cI'vehadthisbikeforthreeyears.UNIT

10思维品质学习能力文化意识语言能力教学目标通过语法表格，引导学生进一步掌握现在完成时的基本概述和用法；并且了解for和since在现在完成时的应用。能够根据学习目标和个人情况，选择适合的学习策略，如多观察，多反思；多记笔记，多背诵等。引导学生敢于用不同时态，尤其现在完成时表达自己的喜好。引导学生观察与翻译，培养其独立思考和发散性性思维，变被动学习为主动学习。能够通过表格活动，引导学生进一步掌握现在完成时的基本用法；能够在习题任务中，掌握for和since在现在完成时的用法。如何引导学生观察，培养其独立思考和发散性性思维；如何引导学生敢于用不同时态，尤其现在完成时表达自己的喜好。0102教学重难点01GrammarFocusSECTIONALead-in11.Fillintheblanks.I

______________thehighestmountainsI___________throughthefieldsOnlytobewithyou~I___________I___________I___________thesecitywallsThesecitywallsOnlytobewithyouButIstill________________WhatI’mlookingforhaveclimbedhaverunhaverunhavescaledhaven’tfoundhavecrawledthepresentperfecttenseLead-in12.FreetalkA:Howlonghaveyouhad…?B:Ihavehadit/themfor______/since______.A:Whatcanyougiveaway?B:...Let'stalkabouttheoldthingsyoudon'tuseanymore.Presentation21.Readthefollowingsentencesandtranslatethem.Howlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.Presentation22.Payattentiontothewordsmarkedinred.现在完成时thepresentperfecttenseHowlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.Presentation21.概述表示过去发生的动作或状态对现在造成的影响或结果；表示从过去开始一直持续到现在的动作或状态。Doyoustillremembertheconcept?Presentation2(1)肯定句结构：主语+have/has+过去分词+其他。(2)否定句结构：主语+haven't/hasn't+过去分词+其他。(3)一般疑问句结构：Have/Has+主语+过去分词+其他？回答：肯定Yes,主语+have/has./否定No,主语+haven't/hasn't.(4)特殊疑问句结构：特殊疑问词+have/has+主语+过去分词+其他？Whataboutthestructure?2.句式结构及回答Presentation23.Payattentiontotheunderlinedwords.Howlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.Presentation2现在完成时表示动作或状态从过去某时开始，一直延续至今，还可能继续下去。since和for是现在完成时当中常见的标志词。since“自从……”，for“持续了……”。since用来说明动作的开始时间，for用来说明动作延续的时间长度。(1)since后面可以接表示过去的时间点，也可以接表示过去的从句；表示动作或状态从过去某一时间开始直到现在的一段时间。例如：TonyhastaughtEnglishinourschoolsincelastyear.自从去年，托尼就在我们学校教英语。3.for和

since

Presentation2TonyhastaughtEnglishinourschoolsincehecametoChinalastyear.自从去年来到中国，托尼就在我们学校教英语。(2)for后面可以接一个表示时间段的短语，表示动作或状态延续多长时间。例如：WehavelivedinBeijingforthreeyears.我们已经住在北京三年了。ShehasstudiedEnglishforfiveyears.她已经学习英语五年了。Theyhavewaitedforthebusfortwentyminutes.他们已经等公交车二十分钟了。Hehasplayedthepianoforanhour.他已经弹钢琴一个小时了。Presentation2过去的时间点。例如：2023,lastyear,yesterday,Monday,threedaysago...sincefor过去的从句。例如：一般过去时谓语时间段的短语。例如：threeyears,twentyminutes,anhour,afewmonths...主句用的什么时态？通常是现在完成时Presentation2例如：(1)since＋时间段＋ago＝for＋时间段例如：Ihavekeptthebooksincetwoweeksago.＝Ihavekeptthebookfortwoweeks.这本书我已经借了两周了。(2)since＋时间点＝for＋时间段例如：It's10o'clocknow.Ihavebeenheresince8o'clock.＝It's10o'clocknow.Ihavebeenherefortwohours.现在是10点钟。我已经在这里两个小时了。【拓展1】since和for的相互转换Presentation2(1)since＋从句(常用一般过去时)例如：TheGreenshavelivedinBeijingsincetheymovedtoBeijingfromParis.自从他们从巴黎搬到北京后，格林一家一直住在北京。(2)Itis/hasbeen＋时间段＋since＋从句(常用一般过去时)例如：Itis/hasbeentwoyearssincemybrotherjoinedthearmy.我哥哥参军已有两年了。【拓展2】常用的since句型Presentation24.Payattentiontotheredwords.Howlonghaveyouhadthatbikeoverthere?I’vehad

itforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.CanIusebought?Presentation24.延续性动词与非延续性动词(1)延续性动词表示能够延续的动作。短暂性动词表示不能延续的动作，这种动作发生后立即结束。例如：live(延续性动词)；open(短暂性动词)(2)短暂性动词在肯定句、疑问句中不能与时间段连用，如become,begin,buy,borrow,arrive,come,die,fall,finish,go,join,leave,marry等。为了表述这种意思，我们常用相应的延续性动词have,keep等来代替非延续性动词。例如：我买这本书一周了。Ihaveboughtthebookforaweek.(×)Ihavehadthebookforaweek.(√)Presentation2非延续性动词（短语）延续性动词（短语）示例（非延续性）示例（延续性）arrive/come/gobein/at/here/thereHearrivedinBeijingtwodaysago.HehasbeeninBeijingfortwodays.leavebeaway(from)Sheleftschoollastyear.Shehasbeenawayfromschoolforoneyear.borrowkeepIborrowedthebookaweekago.Ihavekeptthebookforaweek.lendhavelentHelentmethepenyesterday.Hehashadlentthepentomesinceyesterday.buyhaveIboughtthecarlastmonth.Ihavehadthecarforamonth.Presentation2非延续性动词（短语）延续性动词（短语）示例（非延续性）示例（延续性）begin/startbeonThemoviebegantenminutesago.Themoviehasbeenon

fortenminutes.finish/endbeoverThemeetingfinishedhalfanhourago.Themeetinghasbeenover

forhalfanhour.joinbein/beamemberofHejoinedtheclublastyear.Hehasbeenintheclubforayear./Hehasbeenamemberoftheclubforayear.becomebeHebecameateacherfiveyearsago.Hehasbeenateacherforfiveyears.fallasleepbeasleepHefell

asleeptenminutesago.Hehasbeen

asleep

fortenminutes.Presentation25.Payattentiontowordsmarkedinred.Howlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.谓语动词用延续性动词，可以用Howlong提问。

Practice34aRewritethesentencesusingfororsince.1.JimisinJapan.Hearrivedtherethreedaysago.JimhasbeeninJapanforthreedays.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavenoteatenfortenhours/sincetenhoursago.3.Theboyhasatoygun.Hismotherboughtitforhimin2022.Theboyhashadatoygunforthreeyears/since2022.4.IknowAnna.Ifirstmetherthreeyearsago.IhaveknownAnnaforthreeyears/sincethreeyearsago.5.Lindaisill.ShebecameillonMonday.LindahasbeenillsinceMonday.Practice34bFillintheblankswiththecorrectformsoftheverbsinbrackets.1.I_______________(neverbe)tothebeachbefore.Iwantto_____(go)nextmonthandseethebeautifulsandandsea..2.They_________________(neverown)anypets,butthey__________________(alwayswant)tohaveadog.3.We__________(have)apianosincelastNovember.We______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.haveneverownedhavealwayswantedhaveneverbeengohavehadboughtPractice34bFillintheblankswiththecorrectformsoftheverbsinbrackets.4.CathyandAmy_______________________(notbe)backtotheirhometownfortwoyears.They_____(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum_________(be)hereforover20years.It______(be)oneoftheoldestbuildingsinthissmalltown.havenotbeen/haven’tbeenmisshasbeenis4cFillinthequestionsandasktwostudents.Thencompletethechart.Production4StudentsThingsHowlongTonyfavoritebookfortwoyearsbasketballsincehewas10yearsoldStudent1Student21.Doyouhavea(n)________?Howlonghaveyouhadit?2.Doyouowna(n)________?Howlonghaveyouownedit?Production4A:Doyouhavea(n)________?How