Every complete sentence has a heart, a part that gives it life and energy. Without it, a group of words is just a list. That energetic heart is the verb.

Think of a verb as the engine of a sentence. A car can have wheels, seats, and a shiny coat of paint, but it won't go anywhere without an engine. Similarly, a sentence needs a verb to move forward and express a complete thought. Let's look at two simple groups of words:

• The happy dog.
• The happy dog barks.

The first group is a description, but it's not a complete sentence. The second group is a full thought because the verb barks tells us what the dog is doing.

The most common type of verb is the action verb. These are easy to spot because they tell you what the subject of the sentence is doing. The action can be something you can see, like running, or something you can't, like thinking.

In each of these sentences, you can find the action. Maria is performing the action of singing. He is performing the action of thinking. The cat is performing the action of sleeping. Words like sings, thinks, and sleeps are all action verbs.

Some verbs don't show action. Instead, they describe a state of being, a condition, or a fact. They link the subject of a sentence to a description. The most common state-of-being verb is to be and its various forms, such as am, is, are, was, and were.

In these examples, no one is doing anything. The verbs am, is, and are simply connect the subject to a description or a location. They tell us what someone or something is, not what they do. Other verbs, like seem, feel, or become, can also act as state-of-being verbs.

Recognizing verbs is the first step to building strong, clear sentences. Let's practice what you've learned.

Now you can identify the engine of any sentence and understand whether it's showing an action or describing a state of being.