A subject pronoun, also called personal pronoun, is used as substitute for proper and common nouns.
Eg: Renu is an artist- She is an artist.
The lamp has been switched off- It has been switched off.
A subject pronoun is used when the pronoun is the subject of the sentence.
Eg: _______ sat on the chair.
I, you, he, she, it etc. fit into the blank and therefore are subject pronouns.
A subject pronoun indicates:
An object pronoun, functions as the object of a verb or preposition, as distinguished from a subject pronoun.
Object pronouns are used instead of object nouns, usually because we already know what the object is.
Object pronouns in English are the following:
me, you, him, her, it, us, them
Object pronouns come after either a verb (e.g “like”) or a preposition (e.g “to”).