No, it is not a preposition. It is a noun, a name for a season, which can also be used as a noun adjunct or adjective (winter storms). It may also be used as a verb.
The preposition in the sentence "Alyssa bought her sister a jacket for winter" is "for." Prepositions typically show relationships in terms of time, place, or direction, and in this case, "for" indicates the purpose of the jacket.
Pretty sure its the direct Object.
The preposition is up.
No the word every is not a preposition.
No, the word "when" is not a preposition. It is an adverb or a conjunction used to indicate time or a condition.
Yes, the word among is a preposition.
No, it is not a preposition. The word explore is a verb.
No, it is not a preposition. The word thing is a noun.
The word " I " is not a preposition, it is a pronoun.
No, it is not a preposition. The word away is an adverb.
No, the word "early" is an adverb, not a preposition. It is used to describe the timing of an action or event.
No, it is not a preposition. The word surrounds is a verb form.