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cleanup打扫（或清除）干净=tidyupcheer[tʃɪə]欢呼喝彩cheerup（使）高兴起来，振作起来，打起精神=comeoncheerupthemorcheerthemupcheerupsthcheersthup介词副词动副词组代词放中间giveout（分发）giveaway（赠送）givegiveup(放弃)givein（屈服）comeupwith想出,提出Eg:comeupwithaplancomeupwithanideacatchupwith=keepupwith追赶、赶上putoff推迟puton穿上putup张贴putdown放下putout扑灭putaway把......收起来反takeoff脱下putvolunteer[ˌvɔlənˈtiə]v义务做，自愿做n志愿者volunteertodosth.义务自愿做某事Manypeoplevolunteertoworkonthefarm.很多人志愿到农场去工作。usedto曾经，过去Usedtobe表示过去一度存在，但现在已经消失的某一特定情形。e.g.Jackusedtobeshort,butnowhe’stall.杰克过去很矮，但现在高了。lonely、alone孤独的，寂寞的adjeg:Helivesalonebutheneverfeelslonely.Doyouwanttobeavolunteer?Howcouldwehelppeople?Unit2I’llhelptocleanupthecitypark.help（to）dostheg:help(to)cleanuptheclassroomoffersbsth给某人提供某物sthtosb把某物提供给某人todosth主动提出做某事offerhelp提供帮助1a.Lookatthewaysyoucouldhelppeople.inthepicture.Thenlistotherways.insideOtherwaysyoucouldhelppeople____________________________________________________________________________________________________________________________________________helpcleanupthecityparkshelpcheeruptheoldpeopleTheyarehungryandhomeless.helpstophungerHelptosentfoodtothepoorpeople.Youcouldhelptheoldpeoplecleanuptheirhouses.Youcouldhelpthepassengerswiththeirluggage.Youcouldhelpthepassengerswiththeirluggage.YoucouldhelpplanttreesinyourhometownHelptheoldtogoacrosstheroad.Giveyourseattotheold,thechildren,orthewomanwhowillhaveababy.Ithinkifeveryonemakesacontributiontoourworld,ourworldwillbecomemoreandmorebeautiful.