Thursday, January 6, 2011

Preposition of time

We use:
  • at for a PRECISE TIME
  • in for MONTHS, YEARS, CENTURIES and LONG PERIODS
  • on for DAYS and DATES
atinon
PRECISE TIMEMONTHS, YEARS, CENTURIES and LONG PERIODSDAYS and DATES
at 3 o'clockin Mayon Sunday
at 10.30amin summeron Tuesdays
at noonin the summeron 6 March
at dinnertimein 1990on 25 Dec. 2010
at bedtimein the 1990son Christmas Day
at sunrisein the next centuryon Independence Day
at sunsetin the Ice Ageon my birthday
at the momentin the past/futureon New Year's Eve

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?

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