1. Subject-Verb Agreement

2. What is subject-verb agreement?
Subjects must agree with their verbs in number and in person
Number: singular or plural
Person: first, second, or third
Verbs must agree with their subject, not with a word that comes between

3. Rules of agreement SINGULAR and PLURAL subjects SINGULAR verbs
Use the base form of the verb (such as have, love, or do) to match the subject
When a subject is third person singular, use the –s form of the verb (such as has, loves, or does)
SINGULAR verbs
add an –s to the base (drives, runs, rides)
PLURAL verbs
do not add an –s to the base (drive, run, ride)

4. Examples of agreement The marigolds in the flower pot need watering.
Marigolds are a plural subject therefore need is a plural verb.
A good pair of running shoes costs a lot of money.
Pair is the subject, not running shoes, and is singular; therefore, costs is a singular verb.
Ashley and Dan make a great couple.
Ashley and Dan is a compound subject and create a plural subject, therefore make is a plural verb.