Prepositions Showing Time

at

Example:	I arrived at six o' clock.
	I slept at night.

on

Example:

I arrive on Thursday.

by

Example:

I will arrive by six o'clock.

before

Example:

I will arrive before six o'clock.

from

Example:

I will be here from Thursday to Friday.

since

Example:

I have been here since Thursday.

for

Example:

I am here for two days.

during

Example:

I will be here during Thursday and Friday.

to

Example:

I will be here from Thursday to Friday.

until

Example:

I will be here until Friday.

after

Example:

I will leave after Friday.