Prepositions of time indicate the period of time that something happens (during, from, since, throughout, until, etc)
- I had a couple of terrifying nightmares during the night.
- She swears never to talk to me again from tomorrow.
- His girlfriend has been missing since last Sunday.
- He slept throughout the lecture.
- They said I was breastfed until the age of six.
Prepositions of time used to indicate a particular time (at, by, in, on, etc)
- I had a big argument with my grandma at lunchtime.
- The funeral should be over by five o’clock.
- The astrologer said I would be dead in five years.
- The boss is always sleepy on Monday mornings.
Prepositions of time used to indicate a particular time in relation to another (after, before, etc)
- I start to wonder whether I will be in Heaven or Hell after death.
- I usually need to go to the toilet before having my breakfast.