Final answer:
In the sentence provided by the student, 'chapters' and 'essay' are the nouns. 'Three' is an adjective describing the noun, while 'read' and 'write' function as verbs. There are no adverbs present.
Step-by-step explanation:
To identify the nouns, let's analyze the sentence: "I have to read three chapters and write an essay." The nouns in this sentence are chapters and essay. 'Chapters' is a noun because it's a thing, in this case, sections of a book. 'Essay' is also a noun, as it refers to a written work expressing one's ideas or arguments. Now if we are to identify parts such as adjectives, verbs, and adverbs, you'll notice that 'three' is an adjective as it describes how many chapters. The verb in the sentence is 'read' and 'write,' reflecting the actions being taken. There are no adverbs in this particular sentence.