A verb is defined as "words that show an action, occurrence, or state of being."
Examples:
Action verbs -- run, hop, swing, climb
Occurrence verbs -- stand, determine, define, recommend
State of being verbs -- have, be, seem, become
The infinitive form of a verb is "to" + verb
Examples:
to run, to hop, to swing, to climb, to stand, to determine, to define, to recommend, to have, to be, to seem, to become
Verbs can be used with a linking verb.
Examples:
I am running to the store.
We have stopped at the school.
The linking verb can be separated by a prepositional phrase or an adverb, but it's still there.
I am in the process of running to the store.
We have now stopped at the school.
Verbs can be present tense, past tense, or future tense, depending on when the action occurs.
Present tense:
I run. I skip. I jump.
Past tense:
I ran. I skipped. I jumped.
Future tense:
I will run. I will skip. I will jump.
Notice in the above examples that "to run" is an irregular verb, meaning that it forms its past tense in a irregular way. "To skip" and "to jump" are regular verbs because they use "-ed" to form the past tense.