The time prepositions now and then refer to events in the past, or at the present
moment. Pay special attention to those that can be used to refer to events in both the past and present.
The list of time definitions with preposition samples below is here for you get a
better understanding. Look over the definitions and do the exercise checking your answers below.
A. following a time B. following an event
I'll be in the office after nine tomorrow morning.
"Why did you miss the flight?" "I arrived after the plane had departed."
BEFORE = A. preceding a time B. preceding an event
Please arrive before eight o'clock or we won't get good seats.
Let’s meet for a drink before the play starts.
BY = A.
preceding a time B. preceding a point
"Give me your homework by Friday, or you'll receive a zero."
I was tired of driving by Detroit.
A. telling the time B. following a time
"What time is it now?" "It’s half-past eleven."
"You're not going out now, are you?" "It’s past midnight!"
telling the time
"What time is it?" "It’s quarter to four."
Time Prepositions exercise
For more information about time
prepositions click on the preceding link.