What are the usages of prepositions in sentences?

Prepositions are function words, which cannot be used as sentence components alone, and are usually used before nouns or pronouns. Commonly used English prepositions are: in, on, with, by, for, at, about, under, of, etc.

Prepositions such as At, on and in are often used at a certain time. At is used to indicate at a certain time, such as six o'clock: at six o'clock. On is used to indicate a day of the week or a day, such as Monday. In is used to indicate the morning, noon, evening, month, season or year of a day. Spring is spring.

Prepositions such as during, for, over, within, through, from and to indicate periods. Before, after, since, until, until, between, until, and so on. There is also the concept of time.

When indicating the direction, it is in, in, in, to, for, above, below, in front, in front, behind, etc.

English prepositions can also indicate progress. When used as a predicative, in, in, in, in, etc. An ongoing operation can be indicated. She's working. She's working.

Prepositions can also indicate reasons, and are often used in, etc. Prepositions used to express methods and means are by, with, through and so on. Commonly used prepositions when expressing quantity are about, around, over and so on.