The five basic rules of grammar include the proper usage of nouns, verbs, pronouns, adjectives, and adverbs. Nouns are the names of people, places, or things; verbs are the action words that link the subject to the predicate; pronouns take the place of nouns; adjectives modify nouns or pronouns; and adverbs modify or describe verbs, adjectives, or other adverbs.
Nouns can be either proper or common. Proper nouns refer to specific people, places, or things, and common nouns refer to general terms.
Verbs are either regular or irregular. Regular verbs use the same ending for all persons and tenses, while irregular verbs use different endings depending on the how they’re used.
Pronouns can either be subjective (I, you, she, it), objective (me, him, her, them), possessive (his, hers, theirs), or reflexive (myself, yourself, himself).
Adjectives can modify a noun; they can also be used to describe a noun (big, round, yellow).
Adverbs are used to describe or modify an action or verb, such as quickly, slowly, skillfully, or joyfully.