Prepositions of time in, on, at

1. Prepositions of time

in
on
at

2.

•centuries:
-in the 20th century
• months:
-in September/…;
•seasons:
in
-in the
summer/winter…;
•years:
- in 1998
•in the expressions:
-in the morning/afternoon/evening;
-in an hour;
-in a minute;
-in a few days/week/month/year.

3.

days of the week:
-on Sunday
dates:
-on December 26th
part of a particular day:
-on Sunday evening
on
adjective + day
-on a hot /rainy/windy/warm day

4.

the time:
-at 10 o’clock
in the expressions:
-at the moment;
-at present;
-at dawn;
-at noon;
-at night;
-at midnight.
holidays:
at
-at Christmas;
-at the weekend;

5. Remember

6. Never use the prepositions of time

today
yesterday
never
tonight
tomorrow

7. before the words

each
next
every
this
all
one
last
some
any