outside
No, it is not an adverb. Class is a noun, with several meanings. Class to mean "sophistication" has the adjective "classy" and the adverb form "classily."
Adverb
It can be either. Or also a preposition, or a noun. outside chance, outside wall - adjective stepped outside - adverb outside the lines - preposition the outside of the cup - noun
Adverbs
The adverb in the sentence is outside which modifies the verb 'worked'.
"It was a good meeting" - "good" is an adjective that modifies the noun, "meeting" "The good meeting went well" - the word being modified is "went", a verb. The modifier, "well" is an adverb.
outside
There are no adverbs in this sentence. Mom = noun is = auxiliary verb waiting = gerund outside = preposition adverb for = preposition them = object pronoun. "outside" can be used as a preposition, but here it's an adverb
Adverb
The adverb in the sentence is outside, which modifies the verb 'will be eating'.
Adverb
The term "outside" can be used as a preposition AND an adverb - depending on how the sentence is phrased.For example:I walked outside. (In this sentence, "outside" is an adverb because "I walked" can stand alone as an individual sentence.)Outside of the house, the winds roared. (In this case, "outside" is a preposition because the rest of the sentence cannot stand alone.)