In English, nouns and their accompanying modifiers (articles and adjectives) do not change form when they are used as objects or indirect objects, as they do in many other languages. "The radio is on the desk" and "I borrowed the radio" contain exactly the same word form used for quite different functions. This is not true of pronouns, however, which use different forms for different functions. (He [subject] loves his grandmother. His grandmother loves him [object].) (See, also, pronoun cases.)