Using Verbs
![cat watching fish swim in a fishbowl](/sites/k12/files/unitAssets/grammar_2/11a.jpg)
An action verb tells what the subject is doing.
The fish swim.
(Swim is an action verb telling what the fish are doing.)
A linking verb tells what the subject is being.
They are pretty.
(Are is a linking verb telling what the fish are being—pretty.)