An adverb that tells us how an action is done is called adverb of manner. It usually ends with -ly and answers the question how.

The pupils listen attentively.

Attentively answers the question - How did the pupils listen?

An adverb that tells us when an action happens or is done is called adverb of time. It is usually placed at the end of a sentence and answers the question when.

They will come to school tomorrow.

Tomorrow answers the question - When will they come to school?

An adverb that tells us where an action happens or is done is called adverb of place. It answers the question where.

The children are playing outside.

Outside answers the question - Where are the children playing?

An adverb that tells us about the intensity, extent, or degree of an action is called adverb of degree. It answers the question how much.

The child is very excited.

Very answers the question - How excited is the child?

An adverb that tells us how often an action occurs is called adverb of frequency. It is usually placed before the main verb and answers the question how often.

The children regularly do their homework.

Regularly answers the question - How often do the children do their homework?