Label the part of speech of each underlined word. "tornadoes usually form from a dark thundercloud in the sky." tornadoes, form, dark, in and sky are the underlined words.

Parts of speech are the categories into which words are divided based on their syntactic function (how they are grammatically related to other parts of a sentence).

Nouns, verbs, adjectives, adverbs, pronouns, prepositions, conjunctions, interjections and determiners are the most commonly accepted parts of speech in English.

b. his ability to use formal language to stress strong feelings