No, it is not an adverb. The word tree is a noun, or verb (to chase up a tree). The adjective is "treed" (active or passive) but there is no adverb form.
yes
no
High is an adjective as in 'the apple tree is 20 feet high' High is an adverb as in 'to a high degree' High is a noun as in 'a record high for unemployment'
It can be, when it is a direction. An example is "we went up in a balloon." It can also be an adjective or preposition (up the tree), and colloquially a noun or verb.
Does is a verb, not an adverb.
Adverb
It can be an adverb or an adjective.
Quickly is definitely an adverb. Long *can* be an adverb but before nouns and after linking verbs it is an adjective. Tripped is a verb or adjective. Elevator and tree are nouns.
Tree is neither an adjective nor an adverb. The word tree is a noun, a singular, common, concrete noun; a word for a large form of plant with a stem of wood; a word for a thing.
She ran quickly around the tree is a sentence, or a clause. Quickly is an adverb. It gives us more information about the verb ran.
The word back in "back into" is a verb or adverb. The word "into" is a form of in that is also a preposition. "He went back into the room." (back is an adverb; into the room is a prepositional phrase used as an adverb; into is a preposition) "Don't back into that tree." (back is a verb, into the tree is a prepositional phrase used as an adverb, into is a preposition)
It's a preposition.
In the sentence "yesterday the leaves hung on the tree," "yesterday" is functioning as an adverb modifying the verb "hung."
No. A bonsai (bonsai tree) is a dwarf decorative tree, and the name of the trimming art form. There is no adverb form.
could have moved. Never is an adverb.
Yes, the word narrowly is an adverb.An example sentence for you is: "he narrowly missed the tree by inches".
The word Christmas is a proper noun. It can be used as an adjunct or adjective (Christmas holidays, Christmas tree). But you would need a preposition to use it as an adverb : "He will arrive by Christmas."
No. Christmas is a proper noun, sometimes used as a noun adjunct or adjective as in Christmas tree and Christmas dinner.
Yes, it can be. Examples are "the bare truth" or "the tree was bare of leaves." Bare can also be an adverb, where it functions differently from the adverb "barely." (The ground had been stripped bare by the sheep.) Bare can also be a verb. (They bared their sins to the village priest.)