The use of a, an, or the is a signal that a noun is coming.
In the English language, only nouns are preceded by articles. A is used when a noun starts with a consonant (a book, a table, a bottle); an is used when the noun starts with a vowel (an apple, an umbrella, an avocado); the is used when you are referring to a particular thing (The boy I just met is called Mark.)
Introduction
Thesis
Body 1
Body 2
Conclusion
Angrily, Hamlet denies having given her anything; he laments the dishonesty of beauty, and claims both to have loved Ophelia once and never to have loved her at all. Bitterly commenting on the wretchedness of humankind, he urges Ophelia to enter a nunnery rather than become a “breeder of sinners” (III.i.122–123).