八年级英语下册 8b unit 1 past and present grammar 1教学案 牛津版

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1、8BUnit1pastandpresentGrammar1【学习目标】知识技能:Tolearnsomenewwords过程与方法:Tolearntheuseofthepresentperfecttense情感态度价值观:Tounderstandthedifferencebetweenthepresentperfecttenseandthesimplepasttense　【教学重点】theuseofthepresentperfecttense:have/has+p.p【教学难点】theuseofthepresentperfecttense:have/has+p.p　【课前

2、预习】预习设计、成果展示用括号中所给单词的适当形式填空。1.I（buy）thebiketwoweeksago.I（have）thisbikesincethebeginningofthismonth..I（have）itfortwoweeks.2.Greatchanges（takeplace）inthosevillagesinthelasttenyears.3.Howmanytimesyou（phone）methesedays?you（phone）methismorning?4.Tomcan’tgetintotheroombecausehe（lost）thekeytoth

3、edoor.5.I（look）forthedictionaryeverywhere,butI（findnot）ityet.6.－thenewprogrammes（start）yet?－No,they（plan,still）7.We（live）inShanghaifrom1989to1999.We（live）for10years.8.Theycan’tgowithus.They（finish,not）theworkyet.9.You（changenot）yourmind,haven’tyou?10.Inthepasthe(be)careless.Heoften(make)

4、mistakes.【课堂学习】　一、创设情境、导入新课Reviewthesimplepasttense.Askthestudentsforsomesamplesentences.Eg.MillieinterviewedMrDonglastweek.Eddiewasbornfouryearsago.二、小组合作、师生探究1.Weusethepresentperfecttensetotalkaboutthingsthatstartedinthepastandstillhavesomeconnectionwiththepresent.Eg.ShehaslivedinNanji

5、ngsince1995.EddiehaslivedwithMillieforfouryears.2.Tellstudentsthestructureoftheverb:have/has+pastparticipleThenegativestructure:havehasnot+pastparticiple3.Tellthestudentsthatafewverbscanhelpthemrecognizetheuseofthepresentperfecttense.Tellthemtheuseof“for“and“since”.Givemoresamplesentence

6、s.4.Explaintostudentsthatthepresentperfecttensecanalsobeusedinsentenceswithouttheadverbswhichdetermineitsdefiniteuse.Inthosecases,studentsneedtounderstandthefunctionoftheactionaffectingthepresent,eg.Shehasarrived.Weknowthatshehasarrivedsometimebeforenow,butwedonotknowwhen.Thesimplepastte

7、nseisusedifwehaveafixedtime,eg.Shearrivedthismorning.5.Workthroughafewmoreexamplesentencesillustratingthedifferencebetweenthesimplepasttenseandthepresentperfecttense.四、归纳总结、巩固提高1.whatyouhavelearnt?2.Theunderstandingofthepresentperfecttense3.Theuseoftheperfecttense:have/ha