in和at的区别

99.99%的中国学生会犯的错误——inuniversityvsatuniversity来源：陈金晖的日志99.99%的中国学生会犯的错误——inuniversityvsatuniversity.看过太多太多的学生用inuniversity这样不知不觉的错误。这应该是从中文习惯而来，而没意识到英文是用atuniversity。如果你读到了这篇之后，请别再犯这类无意识的错误了。是否该用in或者atuniversity，在后面的回复中有了一些不是很明晰的讨论，为此，我在google上尽量找个合适的资料来进一步理清疑问，还是找到了这么一条不错的讨论内容：=145047（有疑问的人知道去看看他们的讨论，他们说得比我在这里说得好。全英文内容）【请在分享的时候，不要去掉来源，人家可是很辛苦从网络上找来的内容，虽然非原创，但也下了功夫编排的内容】如何正确使用at/in/on，很多人都会犯错byagostic从网上找到了一些比较好的资料，分享一下。时间介词PrepositionsofTime:at,in,onWeuse:atforaPRECISETIMEinforMONTHS,YEARS,CENTURIESandLONGPERIODSonforDAYSandDATESatinonPRECISETIMEMONTHS,YEARS,CENTURIESandLONGPERIODSDAYSandDATESat3o'clockinMayonSundayat10.30aminsummeronTuesdaysatnooninthesummeron6Marchatdinnertimein1990on25Dec.2010atbedtimeinthe1990sonChristmasDayatsunriseinthenextcenturyonIndependenceDayatsunsetintheIceAgeonmybirthdayatthemomentinthepast/futureonNewYear'sEveLookattheseexamples:Ihaveameetingat9am.Theshopclosesatmidnight.Janewenthomeatlunchtime.InEngland,itoftensnowsinDecember.DoyouthinkwewillgotoJupiterinthefuture?Thereshouldbealotofprogressinthenextcentury.DoyouworkonMondays?Herbirthdayison20November.WherewillyoubeonNewYear'sDay?Noticetheuseoftheprepositionoftimeatinthefollowingstandardexpressions:ExpressionExampleatnightThestarsshineatnight.attheweekendIdon'tusuallyworkattheweekend.atChristmas/EasterIstaywithmyfamilyatChristmas.atthesametimeWefinishedthetestatthesametime.atpresentHe'snothomeatpresent.Trylater.Noticetheuseoftheprepositionsoftimeinandoninthesecommonexpressions:inoninthemorningonTuesdaymorninginthemorningsonSaturdaymorningsintheafternoon(s)onSundayafternoonsintheevening(s)onMondayeveningWhenwesaylast,next,every,thiswedonotalsouseat,in,on.IwenttoLondonlastJune.(notinlastJune)He'scomingbacknextTuesday.(notonnextTuesday)IgohomeeveryEaster.(notateveryEaster)We'llcallyouthisevening.(notinthisevening)地点介词PrepositionsofPlace:at,in,onIngeneral,weuse:atforaPOINTinforanENCLOSEDSPACEonforaSURFACEatinonPOINTENCLOSEDSPACESURFACEatthecornerinthegardenonthewallatthebusstopinLondonontheceilingatthedoorinFranceonthedooratthetopofthepageinaboxonthecoverattheendoftheroadinmypocketonthefloorattheentranceinmywalletonthecarpetatthecrossroadsinabuildingonthemenuatthefrontdeskinacaronapageLookattheseexamples:Janeiswaitingforyouatthebusstop.Theshopisattheendofthestreet.MyplanestoppedatDubaiandHanoiandarrivedinBangkoktwohourslate.Whenwillyouarriveattheoffice?Doyouworkinanoffice?IhaveameetinginNewYork.DoyouliveinJapan?JupiterisintheSolarSystem.Theauthor'snameisonthecoverofthebook.Therearenopricesonthismenu.Youarestandingonmyfoot.Therewasanosmokingsignonthewall.Iliveonthe7thfloorat21OxfordStreetinLondon.Noticetheuseoftheprepositionsofplaceat,inandoninthesestandardexpressions:atinonathomeinacaronabusatworkinataxionatrainatschoolinahelicopteronaplaneatuniversityinaboatonashipatcollegeinalift(elevator)onabicycle,onamotorbikeatthetopinthenewspaperonahorse,onanelephantatthebottomintheskyontheradio,ontelevisionatthesideinarowontheleft,ontherightatreceptioninOxfordStreetontheway