Over is a preposition, and can also be an adverb. It may be a noun but not a pronoun.
No, the word "I" is not a preposition. "I" is a pronoun, specifically a subject pronoun that is used to refer to oneself.
A noun or pronoun after a preposition is called an object of the preposition. It typically follows the preposition in a sentence to show the relationship between the noun or pronoun and other elements in the sentence.
No, "during" is a preposition used to show when something happens or for how long. It is not a pronoun.
In a prepositional phrase, the noun or pronoun that follows the preposition is called the object of the preposition.
No, "she" is not a preposition. It is a pronoun used to refer to a female person or thing.
Yes, "that" is a demonstrative pronoun, not a preposition.
"some" can function as a determiner, pronoun, or adverb, but it is not a preposition.
"Who" is a pronoun, not a preposition or a conjunction. It is used to refer to a person or people.
No, "whom" is not a preposition. It is an object pronoun used as the object of a verb or preposition in a sentence.
No, "these" is a demonstrative pronoun, not a preposition. A preposition is a word that shows the relationship between a noun or pronoun and other words in a sentence.
No, "ours" is a pronoun. It is a possessive pronoun that shows ownership or belonging.
"They" is a pronoun that is used to refer to a group of people or things. It is not a preposition, adverb, or adjective.