What is the part of speech of through?

Answer 1

The word 'through' is a preposition, an adverb, and an adjective.

Examples:

• The ball went through a window. (preposition, 'a window' is the object of the preposition)
• We came through without a scratch. (adverb, modifies the verb 'came')
• The through route is highway 90. (adjective, describes the noun 'route')
• When I finish this sentence, I'm through. (predicate adjective, restates the subject 'I')