This document provides examples and guidelines for using the prepositions "at", "in", and "on" to indicate specific times, dates, periods, or recurring events. It explains that "at" is used for specific times, "in" is used for months, years, centuries and long periods, and "on" is used for days and dates. The document then provides several examples of using these prepositions correctly in different contexts like times, dates, periods, recurring events, and expressions of time. It concludes with an exercise asking the reader to fill in the correct prepositions in additional time and date contexts.

2.  We use:
*at for specific TIME
*in for MONTHS, YEARS, CENTURIES
and LONG PERIODS
*on for DAYS and DATES

3. at
SPECIFIC TIME
in
MONTHS, YEARS,
CENTURIES and LONG
PERIODS
On
DAYS and DATES
at 3 o'clock in May on Sunday
at 10.30am in summer on Tuesdays
at noon in the summer on 6 March
at dinnertime in 1990 on 25 Dec. 2010
at bedtime in the 1990s on Christmas Day
at sunrise in the next century on Independence Day
at sunset in the Ice Age on my birthday
at the moment in the past/future on New Year's Eve

4. Look at these examples:
 I have a meeting at 9am.
 The shop closes at midnight.
 Jane went home at lunchtime.
 In England, it often snows in December.
 Do you think we will go to Jupiter in the future?
 There should be a lot of progress in the next century.
 Do you work on Mondays?
 Her birthday is on 20 November.
 Where will you be on New Year's Day?

8. Expression Example
at night The stars shine at night.
at the weekend I don't usually work at the
weekend.
at Christmas/Easter I stay with my family at Christmas.
at the same time We finished the test at the same
time.
at present He's not home at present. Try later.

9. in on
in the morning on Tuesday morning
in the mornings on Saturday mornings
in the afternoon(s) on Sunday afternoon(s)
in the evening(s) on Monday evening(s)

10. PRACTICE
COMPLETE WITH AT- IN- ON
 ______ September
 ______ 12 o'clock
 ______ winter
 ______ Easter Monday
 ______ 4th July, 1776
 ______ Christmas
 ______ Tuesday
 ______ the weekend
 ______ my birthday
 ______ the end of the week

11. Fill in the correct prepositions.
 1.Peter is playing tennis …………. Sunday.
 2.My brother's birthday is……… the 5th of November.
 3.My birthday is …….. May.
 4.We are going to see my parents ……… the weekend.
 5.………. 1666, a great fire broke out in London.
 6.I don't like walking alone in the streets ……… night.
 7.What are you doing ………. the afternoon?
 8.My friend lived …….. Canada for two years.
 9.I waited for you ……… seven o'clock.
 10.I finished this essay ……… Friday.

12.  11. I'll see you…………….next week.
 12. He was born …………1991.
 13. Did you see her …………..today.
 14. It starts ………….tomorrow.
 15. It was sunny ………….my birthday.
 16. It will be ready ………….eight months.
 17. What's on the TV ……………midnight.
 18. The factory closed ……………June.
 19. ……………. the winter, it usually snows.
 20. ………….. Friday, she spoke to me.
 21. What are you doing………….the weekend.
 22. I'll see you ………….a moment.

13.  23. The anniversary is …………..May 10th.
 24. Where did you go ………….last summer.
 25. The movie starts ………..20 minutes.
 26. ……….. the moment, I'm busy.
 27. They were very popular …………the 1980s.
 28. My appointment is ……………..Thursday morning.
 29. We had the meeting ……………last week.
 30. Are you staying at home …………..Christmas Day.
 31. I have to speak to the boss ………..lunchtime.
 32. ………….. 8 o'clock, I must leave.

14.  33.I do not work …….night.
 34. My father’s birthday is ……..November.
 35. I will send you a letter ………next month.
 36. She has her music classes …….Thursday.
 37. We all went to visit him ……..the day of his
recovery.
 38. There is much snow …….December.
 39. They were arrested ……Saturday night.
 40. She was born ……12.09.2008.