8BUint1Grammar2【教学目标】1.学习现在完成时的时间副词和时间短语。2.能在语境中运用现在完成时。【重点难点】现在完成时与一般过去时在时间副词用法区别。【教学过程】StepOne:Lead-inTheteachercanhaveafreetalkwiththestudents.e.g.YouhaveknownsomethingaboutMr.Chen.CouldyoutellmeanythingaboutMr.Chen?StepTwo:Pre-taskRecentlywehavealreadyknownalittleaboutSunshineTown.Ihaveneverbeentherebefore.Haveyoueverbeenthere?S1:No,Ihaven’tbeenthereyet.T:Mr.Chenwasbornthere.Hehasknownitsincehewasveryyoung.Hehasknownitforalongtime.StepThree:While-taskTask1:1)Tellthestudentsthatwecanuseadverbsoftimewiththepresentperfecttense,suchasalready,ever,for,just,never,sinceandyet.2)Somemoreexamples:IhavejustseenMillieontheplayground.HasMilliecalledyet?No,shehasn’t.IhavenotheardfromMillieyet.Ihavedonemyhomeworkalready.Ihaveneverreadthenovel.…3)现在完成时与时间副词(onPage16)for+段时间fortwodays/threeyearssince+点时间sincelastnight/1992sincetwodaysagosince+句子sinceIcameherelastweekalready一般用于肯定的陈述句yet一般用于否定句和疑问句(否定句中常译为“还”；疑问句中常译为“已经”。)just刚（注意与justnow的区别）recently近来ever曾经(常用于问句)never从不uptonowtillnowover/inthepast10yearssofarbefore(句尾且不加时间)eg.Haveyouvisitedourcitybefore?4)ExercisesA.选择填空Haveyoudoneyourhomework______?(for,just,yet)Ihave_________beentoChengdu.(ever,never,yet)Hehas_______washedthedishes.(already,ever,for)Hehasworkedthere_______heleftschool.(already,just,since)Haveyoucleanedyourroom_______?(for,just,yet)ShehasknownSam_____nineyears.(for,never,since)Haveyou______riddenahorse?(ever,for,yet)Theyhave______arrived.(ever,just,yet)Wehavenotcompletedtheproject_______.(already,for,yet)B.fororsince1.Wehavelivedhere____1990.2.Howlonghaveyoustudiedhere?___5years.3.Theboyhashadabadcold_____lastnight.4.Mr.Huanghaskeptthebooks______aweekago.5.Ihavetaughtintheschool_____Icamehere.6.Wehavebeenfriends____alongtime.总结:for+段时间since+点时间(过去时间)since+句子(一般过去时态的句子)C.句型转换1.Theboyhasalreadygonehome.(一般疑问句)2.Thegirlhasalreadygivenittome.（否定句）3.TheyhaveevervisitedtheHainanIslandbefore.（否定句）总结:1.(现在完成时）肯定句变为否定句的基本方法：2.（现在完成时）肯定句变为一般疑问句的基本方法：3.注意点：just、already、yet之间的关系及各自适应的句型StepFour:Post-task完成句子(1)你曾经到北京旅行过吗？(2)我已经看过这部电影了。(3)她刚刚完成作业。(4)--他们已经去看这部电影了吗?--还没有呢。(5)我以前从未看过这本书。(6)自从他结婚以来就一直住在这里StepFiveHomework
