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1. Use “a”, “and” only with singular nouns. Example: with "an" an elephant

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3. Remember that A(AN) means "one" or "a single". You cannot use A(AN) with plural nouns. Examples: I saw a bears in Yellowstone National Park. Not Correct I saw bears in Yellowstone National Park. Correct

4. If there is an adjective or an adverb-adjective combination before the noun, A(AN) should agree with the first sound in the adjective or the adverb-adjective combination. Examples: He is an excellent teacher. I saw a really beautiful eagle at the zoo.

5. Use “an” with words that start with a vowel sound

6. In English, the two indefinite articles are a and an. Like other articles, indefinite articles are invariable. You use one or the other, depending on the first letter of the word following the article, for pronunciation reasons. Use a when the next word starts with a consonant, or before words starting in u and eu when they sound like you. Use an when the next word starts with a vowel (a,e,i,o,u) or with a mute h.

7. Use a with nationalities and religions in the singular.

8. Use a with the names of days of the week when not referring to any particular day. EXAMPLES I was born on a Thursday. Could I come over on a Saturday sometime?

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10. Use a to refer to an example of something. EXAMPLES The mouse had a tiny nose . The elephant had a long trunk . It was a very strange car .