Page 577 - Wordsmith A Guide to College Writing

A subject is what the sentence is about. It is

usually a noun or a pronoun. It is probably not the

only noun or pronoun in the sentence, but it is the

only one that enjoys such a direct grammatical

connection to its verb. If you ask,

“Who or what __________?” putting the
verb in the blank, the answer to your question is

always the subject of the sentence.