Master the essential words that point out nouns! Learn when and how to use A, AN, and THE correctly.
Example: A man knocked on my door.
A in the above sentence is an article. It introduces one, non-specific noun which in the above sentence is the subject, a man.
Rule: Use "an" before words beginning with a vowel sound
Example: umbrella (the u in umbrella is a vowel sound)
Important: Articles also show if a noun is count or noncount.
Choose the correct article to complete each sentence!