Backyard is a noun. In Britain it is a paved yard at the back of a house. In America, I believe it is a back garden. Informally, it could be, "Not in my backyard" for something a person doesn't want built in their area.
No, backyard is a noun
No, backyard isn't an adverb. It is a noun, and may be an adjunct in terms like backyard barbecue.
The word 'sometimes' is an adverb; a word that modifies a verb as on some occasions or in some situations, but not always. Example:We sometimes cook our dinner on the backyard grill.
The word backyard itself is used as an adjunctive noun (not an adjective) when paired with another noun, e.g. backyard barbecue, backyard mechanic. The word backyard is not an attribute in either case.
It is never an adverb. It is always a preposition. The word "within" can be an adverb or a preposition, and the word "forthwith" (immediately) is an adverb.
It is never an adverb. It is always a preposition. The word "within" can be an adverb or a preposition, and the word "forthwith" (immediately) is an adverb.
No, it is not an adverb. The word into is a preposition.
No, the word eccentric is not an adverb. The word is an adjective and a noun.The adverb form of the word is eccentrically.
No. Full is an adjective. The adverb form is "fully."
No, formal is an adjective, the adverb is formally.
adverb is word that modified a verb,adjective.or other adverb
The word not is an adverb. The word there can be an adverb. The combination "not there" is a compound adverb.The homophone phrase "they're not" includes a pronoun, a verb, and an adverb, because the adverb not has to modify an understood adjective or adverb (e.g. "They're not colorful).
No, endless is an adjective, a word that describes a noun. The adverb form is endlessly.