- "IN', "ON' AND "AT' AS A PRESENT FOR TIME
- "IN" - used for centuries, years, months, seasons and parts of the day: Christmas is always in December. We eat pancakes in the morning.
- "ON" - for the days of the week, specific dates and specific holidays: Christmas is on December 25th. This year Christmas is on Friday. I have a birthday on New Year’s Eve.
- "AT" - for a specific time point: Families are together at Christmas time. We are always together at Christmas dinner time.
- "IN', "ON' AND "AT' AS A PROPOSAL OF THE PLACE
- "IN" - with meaning . . . when we want to say that something is inside another thing with certain limits, for example:
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- room, building, street, city, country - in the kitchen/ Bulgaria/ the street
- Book, Journal - in the book
- car, taxi - in a taxi
- photo or world as a whole - in the world
- "ON" - relevant
- when something is attached/uploaded or standing on this surface - on the wall
- for a given side (left / right) - on the left side
- for living floor - on the house
- for public transport - on the bus
- for TV, radio - on TV
- "AT" - with meaning .NA , when we want to say that something is at a certain point in a specific place:
- building, stop, corner - at the station
- familiar places - school, home, work, cinema, theater - at the cinema
- specific address - at Vitosha Boulevard
- event - at the party

Not once have we had the opportunity to mention that in each language there are some small unchangeable words without which our sentences would not make sense. Yes, that's the preposition! Their function in English is the same as in Bulgarian - let's remember:
What are the prepositions?
They connect the parts of the phrase by expressing certain relationships between entities, such as their location to each other, direction of movement or position in time. Usually after the preposition is a noun or pronoun. They can also connect sentences, not only words, but today we will consider them as just part of the sentence. In particular, we will focus on three of the most used in English - "in", "on" and "at."
Is there any specific logic in using them?
As you probably guessed from what we said above, we can divide the prepositions into several categories according to their purpose. However, this will not always give us clarity on which one to use in a particular situation. The confusion comes from the fact that these three-- "in", "on" and "at," can be used as prepositions for place and time. Then the question is, how do we distinguish them and learn to use them correctly? Let's look at some examples, this is the best way to explain their use and simultaneously create automation so you don't have to think every time you construct a sentence.