初中英语语法表示时间的介词on-in-at

PREPOSITIONSOFTIME:

AT,IN,ON

1Weuse:

at

foraPRECISETIMEIhaveameeting

at

9am.Theshopcloses

at

midnight.Janewenthome

at

lunchtime.at

3o'clock

at

10.30amat

sunriseat

bedtimeat

dinnertimeat

noonat

themomentat

sunset2Weuse:

in

forMONTHS,YEARS,CENTURIESandLONGPERIODS.InEngland,itoftensnows

in

December.DoyouthinkwewillgotoJupiter

in

thefuture?Thereshouldbealotofprogress

in

thenextcentury.in

theSummerin

Mayin

theIceAgein

thepast/futurein

the1990sin

thenextcenturyin

1990in

Summer3Weuse:on

forDAYSandDATESDoyouwork

on

Mondays?Herbirthdayis

on

20November.Wherewillyoube

on

NewYear'sDay?on

Sundayon

Sundayon

Tuesdayson

Tuesdayson

6Marchon

6Marchon

25Dec.2010on

25Dec.20104Noticetheuseoftheprepositionoftime

at

inthefollowingstandardexpressions:

ExpressionExampleatnightThestarsshine

atnight.attheweekend*Idon'tusuallywork

attheweekend.atChristmas*/EasterIstaywithmyfamily

atChristmas.atthesametimeWefinishedthetest

atthesametime.atpresentHe'snothome

atpresent.Trylater.5Prepositionsoftime6Noticetheuseoftheprepositionsoftime

in

and

on

inthesecommonexpressions:

inoninthemorningonTuesdaymorninginthemorningsonSaturdaymorningsintheafternoon(s)onSundayafternoonsintheevening(s)onMondayevening7

Whenwesay

last,next,every,this

wedo

not

alsouse

at,in,on.

IwenttoLondon

last

June.(not

inlast

June)He'scomingback

next

Tuesday.(not

onnext

Tuesday)Igohome

every

Easter.(not

ate