What is the adverb in this sentence "The team eagerly awaited their next opponent"?
An adverb is a word that modifies a verb - it tells us a bit more about what is going on.
One telltale way to see words that are adverbs is that they often (although not always) end in "-ly".
Let's now look at our sentence:
The team eagerly awaited their next opponent.
Is there a word that ends in "-ly"? Yes - "eagerly".
Does it modify a verb? Yes it does - the verb "awaited", as in "How did the team await?" Answer - eagerly.
Another way to see it is to take out the adverb and see how it changes the sentence:
The team awaited their next opponent.
Now we don't know the mood of the team - was it excited? eager? despondent? fearful?