“Slowly” is an adverb here as it describes how fast the train is moving. Oh, here is a group of passengers, waiting "patiently" for their train. "Patiently" is the word describing the verb ...

It's a doing or action word. For example… The verb in that sentence is 'ate'. An adverb is a word that describes the verb. The adverb in this sentence is 'quickly'. It tells us how Zak ate his ...