Uses of adverbs
Adverbs answer the question how (e.g. How is the dog running?), as well as when, and where.
The dog ran quickly.
Quickly is modifying the verb ran.
The adverb doesn’t have to go after the verb; feel free to vary the sentence structure to make it more interesting for your reader:
Silently, the girl snuck past her parents’ room.
Adverbs can also modify adjectives and other adverbs.
The dog ran fairly quickly.
The adverb fairly is modifying the other adverb quickly.
The weather report is almost always right.
The adverb almost is modifying the adverb always.
The woman is quite pretty.
The adverb quite is modifying the adjective pretty.
This book is more interesting than the last one.
The adverb more is modifying the adjective interesting.