Subject-verb agreement means the verb must match the subject. If the subject is singular, the verb is singular. If the subject is plural, the verb is plural.
Always look at the subject first—then choose the verb that matches.
A singular subject means there is one person, place, or thing. Singular subjects usually need verbs that end in -s.
With he, she, or it, remember to add -s to most verbs (like runs, jumps).
A plural subject means more than one person, place, or thing. Plural subjects usually need verbs without an -s.
When the subject is plural, the verb usually does not end in -s.
The verb to be changes form depending on the subject. Use am with I, is with singular subjects, and are with plural subjects.
Remember: I am, He/She/It is, We/You/They are.
Subject-verb agreement helps sentences make sense. The verb must always match the subject in number (singular or plural).
When writing, ask: Is the subject one or more than one? Then choose the verb that matches.