In this exercise, you'll see input verbs and model verbs. If you choose ring as your model verb, and then bring as your input verb, bring will conjugate the way that ring normally does.

A verb is a word used to describe an action. That’s doing something. Or, a verb can be used to describe a state. That’s feeling something. Or, a verb can be used to describe an occurrence.

The examples below show how an action, state, or occurrence can be moved from a noun back to a verb. In your scientific paper, use verb tenses (past, present, and future) exactly as you would in ...

When the subject of a sentence isn't doing something, the verb is passive. On the other hand, a sentence is active when the subject performs the verb (action). For example, in this sentence the ...