时间介词in,on与at的用法介词in,on与at都可用于表示时间的名词前,但用法各不相同,其区别在于:•一、用in的场合(1)表示“在某年、月、季节”这个含义时,须用介词in。例如:•Shecametothiscityin1980.•他于1980年来到这个城市。Mother'sdayisinMay•母亲节在五月Itoftenrainshereinsummer.•夏天这里常常下•(2)morning/evening/afternoon三个词跟介词in连用。例如:Icleanmyroomintheevening.•我在晚上做作业。•Theysometimesplaygamesintheafternoon.•他们有时在下午做游戏。•(3)表示“从现在起一段时间以后”时,须用介词in。例如:Theywillgotoseeyouinaweek.他们将在一周后去看望你。•(1)表示“在某年、月、季节”这个含义时,须用介词in。•(2)morning/evening/afternoon三个词跟介词in连用。•(3)表示“从现在起一段时间以后”时,须用介词in。•二、用on的场合•(1)表示“在具体的某一天”或“(在具体的某一天的)早上、中午、晚上”等,须用介词on。例如:JackwasbornonMay10th,1982.•杰克生于1982年5月10日。•Theyleftonarainymorning.•他们是在一个雨天的早上离开的。•HegotoChinaonasummerafternoon.•他在一个夏天的下午去中国。•(2)表示“在星期几”或“在星期几的早上、中午、晚上”等,用介词on。•例如:Wedon'tgotoschoolonSaturdayandSunday.•我们星期六和星期天不上学。•Whendoyougetuponweekdays?•你在平日什么时候起床?IheardthisstoryonSaturdaymorning.•我是在星期六的早晨听到这个故事的。•(3)表示“在某一节日”时,须用介词on。例如:•WeusuallyeatmooncakesonMid-autumnFestival.•我们通常在中秋节吃月饼。•MrHureceivedacardonTeachers'Day.胡老师在教师节那天收到了一张卡片。•三、用at的场合•(1)表示“某一具体时刻(即几点几分时)”,须用介词at。例如:•Hegetsupatsixo'clockeveryday.•他每天六点起床。•Igothomeatfivethirtyyesterdayafternoon.•我昨天下午五点半到家。••(2)用在特定的时候(时节、时机)时,须用介词at。例如:•Theywerehappyatthattime.•他们那时很幸福。•Ithinktheshopisclosedatthistime.我认为商店在这个时候关门了。•(3)“在noon、night”前,须用介词at。例如:•Whatdoyouoftendoatnoon?•你中午经常做些什么?•Youcanseemanystarsintheskyatnight.•夜晚你能看到天空中有许多星星。•注意:在含有next,last,this,one,any,each,every,some,all的词组和tomorrow,yesterday,thedayaftertomorrow,thedaybeforeyesterday前不用任何介词。•例如:Whatdoyoudoeveryday?•你每天都做什么?•Whatdidyoudolastsummerholidays?•去年暑假你做了些什么?•Whatareyougoingtodotomorrow?•后天你打算做什么?•Mygrandfatherwasborn____Oct.10,1935.on•Idoexercises____seven_____theeveningatin•Mother'sdayis__Mayin•Whydidyougetupsoearly___thismorning.in•Whendoyougetup___Monday?on•Weoftenplayfootball___Saturdaymorning.on•Weusuallyeatmooncakes___Mid-autumnFestivalon•HearrivedinShanghai___9:30___March5.aton•Whatareyougoingtodo___tomorrow?×练习•()1.----Thereisnothing____tomorrowafternoon,isthere?-----No.Wecanhaveagameoftabletennis.•A.onB.inC.outD.up•()2.Alotofstudentsinourschoolwereborn____March,1981.•A.inB.atC.onD.since•()3.Hesuddenlyreturned____arainynight.•A.onB.atC.inD.during•()4.Mygrandfatherwasborn____Oct.10,1935.•A.onB.inC.atD.of•()5.Mikedoeshisexercises____seven_____theevening.•A.on;toB.at;inC.by;ofD.at;on•()6.Childrenwakeupveryearly____themorningofChristmasDay.•A.inB.onC.forD.at•()7.HewenttoShanghai___September3,1991andcameback___acoldmorninglastyear.•A.in;onB.on;inC.on;onD.in;ia•()8.MrsBrowncametoChina____1996.•A.onB.ofC.to,D.in•()9.AnnmovedHangzhou___September,1992.•A.inB.onD.in•()10.Theystartedoff___anautumnafternoon.•A.duringB.atC.inD.on•()11.Heoftengoes____school____sixthirty____themorning.•A.for;to;inB.to;at;inC.to;for;atD,for;at;to•()12.HearrivedinShanghai___9:30___March5.•A.in;atB.on;atC.on;atD.at;on练习•(A)1.----Thereisnothing____tomorrowafternoon,isthere?-----No.Wecanhaveagameoftabletennis.•A.onB.inC.outD.up•(A)2.Alotofstudentsinourschoolwereborn____March,1981.•A.inB.atC.onD.since•(A)3.Hesuddenlyreturned____arainynight.•A.onB.atC.inD.during•(A)4.Mygrandfatherwasborn____Oct.10,1935.•A.onB.inC.atD.of•(B)5.Mikedoeshisexercises____seven_____theevening.•A.on;toB.at;inC.by;ofD.at;on•(B)6.Childrenwakeupveryearly____themorningofChristmasDay.•A.inB.onC.forD.at•(C)7.HewenttoShanghai___September3,1991andcameback___acoldmorninglastyear.•A.in;onB.on;inC.on;onD.in;ia•(D)8.MrsBrowncametoChina____1996.•A.onB.ofC.to,D.in•(A)9.AnnmovedHangzhou___September,1992.•A.inB.onD.in•(D)10.Theystartedoff___anautumnafternoon.•A.duringB.atC.inD.on•(B)11.Heoftengoes____school____sixthirty____themorning.•A.for;to;inB.to;at;inC.to;for;atD,for;at;to•(D)12.HearrivedinShanghai___9:30___March5.•A.in;atB.on;atC.on;atD.at;on•答案:BAAAAABBBBBCADBADBDB