Adverbs add to verbs. They provide extra description for how an action is taking place. Lots of people forget to include adverbs in their writing, but adverbs are a crucial part of sentence structure in order to interest the reader.
Compare the two sentences below:
Changing the adverb drastically changes the relationship between Kristina and Sarah in this sentence. What is the difference in the relationship?
When trying to spot an adverb, remember most adverbs end in "-ly."