Completar frases Part of speechVersión en línea las parte de un discurso. por angleris araujo 1 Conjunctions Adverbs Interjections Adjectives Pronouns Verbs determiners Nouns Prepositions are a person , place , thing , or idea . They can take on a myriad of roles in a sentence , from the subject of it all to the object of an action . They are capitalized when they're the official name of something or someone , called proper nouns in these cases . stand in for nouns in a sentence . They are more generic versions of nouns that refer only to people . are action words that tell what happens in a sentence . They can also show a sentence subject's state of being ( is , was ) . Verbs change form based on tense ( present , past ) and count distinction ( singular or plural ) . describe nouns and pronouns . They specify which one , how much , what kind , and more . Adjectives allow readers and listeners to use their senses to imagine something more clearly . describe verbs , adjectives , and even other adverbs . They specify when , where , how , and why something happened and to what extent or how often . show spacial , temporal , and role relations between a noun or pronoun and the other words in a sentence . They come at the start of a prepositional phrase , which contains a preposition and its object . join words , phrases , and clauses in a sentence . There are coordinating , subordinating , and correlative conjunctions . function like adjectives by modifying nouns , but they are different than adjectives in that they are necessary for a sentence to have proper syntax . Articles and determiners specify and identify nouns , and there are indefinite and definite articles . are expressions that can stand on their own or be contained within sentences . These words and phrases often carry strong emotions and convey reaction s