Where do we use in and on in a sentence?

English speakers use in to refer to a general, longer period of time, such as months, years, decades, or centuries. For example, we say “in April,” “in 2015” or “in the 21st century.” Moving to shorter, more specific periods of time, we use on to talk about particular days, dates, and holidays .

What is difference between on and in?

Both are prepositions. Both denote position. While IN stands for position of something or someone inside, the ON, on the other hand, indicates something or someone over not beneath.

What is difference between in and at?

= in refers to inside the library and at generally refers to meeting outside at the entrance (although English speakers can use both to mean the inside).

Is located at or in?

Location PrepositionsPrepositionLocationsatspecific locations, addresses, companies, stores, events, parties, desks, countersinenclosed spaces, buildings, organizations, regions, water, deserts, mountain ranges, forests, cities, countries, continents, the sky, space, cars, groups of people, little boats2