Question

Does the following sentence have any adverbs? If so, where?: Many explorers searched endlessly for new lands.

Answer 1

Endlessly

Explanation:

Endlessy says something about a verb.
*An adverb is a word that modifies a verb, adjective, another adverb, determiner, noun phrase, clause, or sentence. (wikipedia)

Answer 2

Yes, endlessly

Explanation:

Many explorers searched endlessly for new lands.

Adverbs are words that modify or describe verbs, so in this case the word endlessly describes:
1. How did the explorers searched for new lands?
2. In what manner did the explorers search for new lands?

Answer 3

See below.

Explanation:

The adverb in this sentence is "Endlessly".

An adverb is something describes a verb.
In this case, "Endlessly" is describing `how` they searched for new lands.

Hope I helped (: