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1、Unit1PastandpresentLesson5【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。【教学重难点】现在完成时与一般过去时在时间副词用法区别。【教学过程】Step1Lead-inTheteachercanhaveafreetalkwiththestudents.e.g.YouhaveknownsomethingaboutMr.Chen.CouldyoutellmeanythingaboutMr.Chen?Step2Pre-taskRecentlywehavealreadyknownalittle
2、aboutSunshineTown.Ihaveneverbeentherebefore.Haveyoueverbeenthere?S1:No,Ihaven’tbeenthereyet.T:Mr.Chenwasbornthere.Hehasknownitsincehewasveryyoung.Hehasknownitforalongtime.Step3While-task1．Tellthestudentsthatwecanuseadverbsoftimewiththepresentperfecttense,suchasalready,ever,
3、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for+段时间fortwodays/threeyearssince+点时间sincelastnight/1992sincetwodaysago
4、3/3since+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)e.g.Haveyouvisitedourcitybefore?4．ExercisesA．选择填空Haveyoudoneyourhomework______?(
5、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
6、?(ever,for,yet)Theyhave______arrived．(ever,just,yet)Wehavenotcompletedtheproject_______.(already,for,yet)B．fororsince（1）Wehavelivedhere____1990.（2）Howlonghaveyoustudiedhere?___5years.（3）Theboyhashadabadcold_____lastnight.（4）Mr.Huanghaskeptthebooks______aweekago.（5）Ihavetaug
7、htintheschool_____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:3/3（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
8、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。Step4Post-task完成句子（1）你曾经到北京旅行过
