SUBJECT, VERB, COMPLEMENT AND MODIFIER
SUBJECT In English grammar, the subject is the part of a sentence or clause that commonly indicates (a) what it is about, or (b) who or what performs the action (that is, the agent). The subject is typically a noun ("The dog . . ."), a noun phrase ("My sister's Yorkshire terrier . . ."), or a pronoun ("It . . ."). The subject pronouns are I, you, he, she, it, we, they, who, and whoever . In a declarative sentence, the subject usually appears before the verb (" The dog barks"). In an interrogative sentence, the subject usually follows the first part of a verb ("Does the dog ever bark?"). In an imperative sentence, the subject is commonly said to be " you understood" ("Bark!"). Consider the following sentence : She and her friends are at the fair. The book or the pen ...