The document provides information about using prepositions of time - at, in, and on. It explains that: At is used for specific times of day (e.g. at 5 o'clock). In is used to indicate longer periods like months, years, seasons, or durations (e.g. in October, in 6 months). On is used for specific days and dates (e.g. on Friday, on May 1st). It also gives examples of common phrases and clarifies usage for mornings, afternoons, evenings, and weekends.

1. Mrs. Anabel Montes - English teacher

2. PREPOSITIONS OF TIME (AT, IN, ON)
• We use:
AT for the time of day:
Ex. at five o’clock / at 11.45 / at
midnight / at lunchtime / at sunset etc.

3. • We use AT in these expressions:
at night
at the weekend / at weekends
at Christmas
at the moment / at present
at the same time

4. ON for days and dates:
Ex. on Friday(s) / on 16 May 1999 / on
Christmas Day / on my birthday

5. IN for longer periods (e.g.
months/years/seasons):
Ex. in October / in 1988 / in the 18th
century / in the past
in (the) winter / in the 1990s / in the
Middle Ages / in (the) future.

6. • We say in a few minutes / in six
months, etc:
She’ll be here in a moment. (= a moment
from now)
• We also use IN … to say how long it takes
to do something:
I learnt to drive in four weeks. (= it took
me four weeks to learn)

7. • We say:
in the morning (s) but on
Friday morning(s)
in the afternoon(s) but on
Sunday afternoon(s)
in the evening(s) but on
Monday evening(s)

8. 8
1) ..... 7 May
2) ..... 6.30 a.m.
3) ..... May
4) ..... Sunday
5) ..... Christmas
6) ..... Christmas Day..

9. 9
Write at / in /on
1) ..... night
2) ..... the weekend
3) ..... half past two
4) ..... summer
5) ..... the morning
6) ..... Saturday night..