4 different categories of adverbs are…
Place
Manner
Time
Frequency
Place
Eg
Indicates a location
Inside, outside, near, close to
Manner
Eg
Describes the way things happen
Eg happily,angrily, sadly
Time
Eg
Indicates a time
Eg soon, tomorrow, later
Frequency
Eg
Indicates how often something happens
Eg always, never, sometimes, occasionally