Je mange une pomme - I’m eating an apple. Je is the subject, the person who is doing the action. Une pomme is the object because it is on the receiving end of the action.

The noun senator indicates to us who the object is while the noun ‘delegates’ is the subject”. Equally important, pronouns, earlier enumerated, can serve as objects. For instance ...

The relative pronoun that always introduces essential information and can be omitted if it is the object of the clause. Relative pronouns CANNOT be omitted when they are the subject of the clause; ...

Je mange une pomme - I’m eating an apple. Je is the subject, the person who is doing the action. Une pomme is the object because it is on the receiving end of the action.