unit1book3课件
日期：2010-07-28 07:40
强调与现在的联系I’veknownhersinceIhavelivedheresinceIcamehereeversinceIlivedhere---Tomdoesn’tlivehere，该动词要用现在完成时，Unit1Thatmustbearecord1since2setdown3impressiveastherecordis，或用eversince+一般过去时，起算的时间不同:since+瞬间动词的过去式(从该动作发生时算起)since+持续动词的过去式(从该动作结束时算起)HehasworkedveryhardsinceheenteredthefactoryWehaven’tseeneachothersinceIworkedinthefactory从他入厂以来…从我不在厂工作以来…比较:It’stwoyearssincehejoinedthearmysincehewasasoldier他参军两年了他退役两年了It’salmostthreeyears___IlastsawherAsinceBwhenCthatDafterA(=IthasbeenthreeyearssinceIlastsawher)如果是要表示从句的动作或状态至今，doeshe?---___IthasbeenfouryearssincehelivedhereANo，hedoesn’tBYes，…4inthefirstplace5makefor6attempt7familiar8centreon/concentrateon/focuson1Thefirsteditionwaspublishedin1955andhasbeenabest-sellereversince(para1)Skateboardshavebeenaroundsincethe1970s(p7)since其后的动词不同，hedoesC，
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