Pronouns take the place of nouns. Adjectives modify nouns or pronouns and tell which, whose, what kind, and how many. Adverbs modify verbs, adjectives, and other adverbs and tell how, when, where, and how much . Prepositions must have an object and show a relationship between its object and some other word in the sentence. Conjunctions join words, phrases, and clauses .
Interjections show feeling and are punctuated with either a comma or an exclamation point.
Remember that what part of speech a word is depends on how it is used in the sentence. In the following sentences tell the part of speech of each italicized word as used in the sentence. Joe has been here since yesterday. I will do what I can since you want it. I looked behind for any cars.