The document discusses the rules for using "a" versus "an" before singular nouns in English. It states that "a" is used with words beginning with consonant sounds, while "an" is used for words beginning with vowel sounds. Several examples are provided to illustrate these rules. The document then provides practice sets for the reader to identify whether "a" or "an" should be used in different sentences.

1. A or An?

2. First, lets study the rules: A and An are articles, they are used with singular nouns. A and An = 1 For example: a book = 1 book an apple = 1 apple But how do we know when to use a and when to use an? It’s simple: Use A with words that begin with a : a c at /k/ a h ouse /h/ a u niverse /y/ a b all /b/ Use An with words that begin with a : an a pe /e/ an h our /a/ an i njection /i/ an u gly man / Λ / consonant sound vowel sound

3. Is it a or an ? car book apple star eraser house hour ring umbrella pencil ear unicorn year lime A A An A An A An A An A An A A A

4. Are you ready for another set?

5. Is it a or an ? cat elephant monkey ice-cream cone envelope flower united team butterfly truck airplane engineer bat M.B.A. igloo A An A An An A A A A An An A An An

6. Complete these sentences: I saw _____ truck drive by the house. My mom bought _____ car today. Can you lend me _____ eraser, please? We didn’t find _____ nice gift for dad. We’ll eat in about _____ hour. I found _____ umbrella on _____ bench in the park. _____ horse with _____ enchanted horn, is called _____ unicorn. a a an a an an a A an a

7. Good Job!