Prepositions

Prepositions are those words that allow us to determine the time and place in a conversation.

When talking in general about the parts of the day, we use “in”

To talk about days of the week, specific dates and special days with the word "day" the preposition "on" is used.

On the other hand, for hours, parties and festivals without the word "day" the word "at" is used.

For example:

- on the main avenue

- see you at my house, at night

- see you in the park tomorrow

Prepositions on place:

In this case the 3 prepositions will mean the same thing, but each one addressed to a different perspective. So:

- "at" when we talk about a specific place

- "on" when we talk about streets, blocks and avenues

- "in" for countries, open places

For example 

- On fifth avenida

- In México

- At school

- At the University