at, in, on 表示时间、地点时的区别

IsaacZ

From LDOCE

WORD CHOICE:at, in, on

Talking about time

Use at
with clock times : at one o'clock | at 6.30
with points of time in the day : at midnight | at noon | at dawn | at sunset
with holiday periods, meaning the few days around the holiday : at Easter | at Diwali
with weekend , in British English : See you at the weekend! |At weekends we go out.

Use in
with parts of the day : in the morning | in the evening |I never watch TV in the daytime.
with months, seasons, years, centuries : in May | in summertime |in 2004 | in the 21st century

Use on
with dates and specific days : on 29th July | on Tuesday afternoons |on the last day of term
with weekend , in American English : We sometimes go there on weekends.


Talking about position and place

Use at
with particular positions or places : at the end of the corridor | at the back of the room | at the corner of the street
to mean 'next to' or 'beside' : She sat at her desk. |He stopped me at the door.
with words for buildings, for example airport , university , restaurant , art gallery : at the airport | at the Lyceum theatre
with city or place names, when you are talking about stopping during a journey : Does this train stop at Watford? !! BUT otherwise use in - see below

Use in
with a position or place, when something or someone is inside a larger thing such as a room : in the bath | in the kitchen | in the garden | in the doorway
with cities, counties, states, and countries : When will you arrive in Tokyo? | He lives in Germany. | She's working in California.
with the names of squares, plazas etc : in Times Square

Use on
with a position or place, when one thing is attached to or touching another : a spot on the end of her nose |a jacket on the back of a chair
with street names : on the High Street | on 42nd Street | on Broadway