Prepositions of time are words that are used to indicate when something happened or will happen.
The prepositions "on," "at," and "in" are all commonly used to talk about time.
"On" is used to refer to specific days or dates:
- I have a meeting on Monday.
- We're going on vacation in July.
"At" is used to refer to specific times:
- I'll see you at noon.
- She goes to bed at 10pm.
"In" is used to refer to longer periods of time, such as months, years, or centuries:
There are certain phrases that are commonly used with the prepositions "on," "at," and "in" to describe different parts of the day. - I was born in 1990.
- The company was founded in the 20th century.
Here are a few examples:
"On" is often used to describe the morning, afternoon, and evening:
- I'll see you on Monday morning.
- We're going to the park on Saturday afternoon.
- I usually go to bed on weeknights around 10pm.
"At" is often used to describe the exact time something happens:
- I'll see you at noon.
- She goes to bed at 10pm.
"In" is often used to describe the morning, afternoon, and evening, but it can also be used to describe a longer period of time within the day:
- I'll see you in the morning.
- We're going to the park in the afternoon.
- I usually go to bed in the evening.
- I'll be busy in the morning, but I'll have some free time in the afternoon.
