It is generally an adverb when located at the beginning of a sentence. You should find that it modifies the verb that follows it, as to where. However, it could be a pronoun if it represents a thing or things.
adv.
>At or in that place: "Sit over there." "There she goes." "There's the parking lot!"
>To, into, or toward that place: "I wouldn't go there again. "
>At that stage, moment, or point: "Stop there before you make any more mistakes."
>In that matter: "I can't agree with him there."
pron.
>Used to introduce a clause or sentence: "There are numerous items." "There must be another exit."
>Used to indicate an unspecified person in direct address: "Hello there!"
adj.
>Used especially for emphasis after the demonstrative pronoun that or those, or after a noun modified by the demonstrative adjective that or those: "That person there ought to know the directions to town. "
>Nonstandard/Slang (generally in the Southern U.S.) - Used for emphasis between a demonstrative adjective meaning "that" or "those", and a noun: "No one is sitting at that there table." "Them there beans ought to be picked."
n.
>That place or point: "It stopped and went on from there."
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Verbs
Why is the beginning of a interrogative sentence.
In the sentence, "Which is his sister?", "which" is an interrogative pronoun.
Noun--however, many words have several possible parts of speech; please submit the Whole Sentence when asking for part of speech--cannot be sure without seeing how it is used in the sentence, as that's what determines the part of speech.
Her is a pronoun.
regular speech
it depends what word it is it could be any part of speech depending on the sentence
Verbs
The action in a sentence is the part of speech known as a verb.
The part of speech for "gliding" is a gerund, which functions as a noun in a sentence.
The part of speech of "correct" in this sentence is an adjective.
All subjects are part of speech for they are all nouns.
The part of speech that answers "what" or "whom" in a sentence is a pronoun. Pronouns are words like "he," "she," "it," "they," "who," and "what" that replace nouns in a sentence.
a sentence is a part of speech
Why is the beginning of a interrogative sentence.
you
Noun