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WatertalksDorawasinthebathroom.Thetapwason.“Turnthattapoff.”saidanangryvoice.”You’rewastingwater.”Doralookedaround,buttherewasnoonethere.“Whoareyou?”“I’madropofwater.DoyouknowwhereIcomefrom?”“Fromthetap?”askedDora.“Afewdaysago,Iwasinacloud,”saidthedropofwater.”ThenIdroppedintoariverandranintoareservoir.Thenitwastimeforpeopletocleanme.”“Cleanyou?”Doraasked.“Yes.Iwasdirty.Theycleanedmeandaddedsomechemicalstome.ThenItravelledthroughthepipesunderthestreetsandnowI’mhere.”Doraasded,“Soisthistheendofyourjourney?”“No.Pleasewillmakemecleanagain.I’llgointoariverandthenintotheseaagain.”“Again?”“Yes.Myjourneystartsthere.Remembernottowasteorpolluteme.I’mvaluable.”Doraturnedthetapoffandcameoutofthebathroom.1.水龙头开着。on是副词,表示已连接、处于工作状态或使用中。可直接放在be动词之后作表语，也可与turn构成短语、意为“接通（电流、煤气、水等）打开”例如：Thelightsareon.Thereissomebodyintheroom.Maryenteredtheroomandturnedonthelights.2.“把水龙头关掉”一个声音生气地说道。Turnthattapoff=turnoffthattap.如果用代词it代替thattap,只能用turnitoff.应强调动词短语的这种用法。例如：switchonthefan=switchthefanon\switchiton.3.你知道我是从哪儿来的吗？此句含有由where引导的宾语从句。4.接下来就到人们清洁我的时候了。It’stime(forsb.)todosth.意为“是（某人）做某事的时候了；某人该做某事了”。相当于It’stimeforsth.。如：It’stimetogotobed.=It’stimeforbed.5.他们将我净化。还给我加了点化学药品。6.那么这就是你整个旅程的终点了吗？theendof…意为“……的结尾；……的尽头”。如Don’ttellmetheendofthestory.Iwanttoreaditmyself.7记住不要浪费我，也不要污染我。Remembernottodosth.意为“记得不要（去）做某事”。如：Youmustremembernottopollutetheenvironment.