what are preposition,connector and their rules?

Sorry,I didn't get you so plz answer it clearly?

Preposition is a word that links noun, pronoun and phrases (object) in a sentence to other words (subject). It is essentially used to point out the relation between the two.Example:A book is on the table.The glass is filled with water.

Preposition is a word that links noun, pronoun and phrases (object) in a sentence to other words (subject). It is essentially used to point out the relation between the two.Example:A book is on the table.The glass is filled with water.