The word that tells something more about a verb, an Adjective or another Adverb in a sentence is called an Adverb, An Adverb modifies a Verb, an Adjective or another Adverb.
The word that tells about the time of action or state of a verb in a sentence is called an Adverb of Time.
Look at the sentences:
a. He came early.
b. I am late.
In these sentences 'early' and 'late' tells about the time of the action and state of the verbs 'came' and 'am' respectively and hence 'early' and 'late' are Adverbs of Time. The adverbs 'early' and 'modifies', the verbs 'came' and 'am' respectively.
The word that tells about the Place of action or state of the verb in a sentence is called an Adverb of Place.
Look at the sentences:
a. The boys went home.
b. He is there.
In these sentences, 'home' and 'there' tells about the place of action and state of the verb 'went' and 'is' respectively and hence they are Adverbs of Place. The adverb 'home' and 'there' modifies the verb 'went' and 'is' respectively.
The word that tells about the manner of action or state of the verb in the sentence is called an Adverb of Manner.
Look at the sentences:
a. The man walks fast.
b. I am slow.
Here 'fast' and 'slow' tells about the manner of action and state of the verb 'walks' and 'am' respectively and hence they are Adverbs of Manner. The adverb 'fast' and 'slow' modifies the verb 'walk' and 'am' respectively.