In, On, At are three prepositions in English. They can give us information about time or place. Take a look at 
these two examples:
- I wake up at 7 am.
- She live in Brazil.
The first example tells us about time. The second is for a place. These three prepositions are difficult because in many languages they are the same word. So when you are learning English, you need to know when to use in, on, or at. This lesson will tell you when and give you examples.
In, On, At for Time
| Preposition | Time | Example |
| In | Year
Month Season Part of Day |
In 2003
In December In summer In the morning, In the evening, In the afternoon |
| On | Day
Date |
On Monday
On July 7, 2004 |
| At | Time | At 5:30 pm
Night |
In, On, At for Place
| Preposition | Place | Example |
| In | Country
State City |
In Japan
In California In Toronto |
| On | Street | On Main Street |
| At | Address | At 1534 22nd street. |
Expressions with In, On, At
| In bed
In the car In the house In line In the shower In the forest In school
|
At home
At school At work At the mall At the beach At your desk At the park
|
On the phone
On the train On the plane On a bike On a team On the computer On vacation On a break
|
Use the tables above to know when to use in, on, or at. When you think you understand, try these test:
In, On, At Test
In, On, At Test 2