Which article a or an is used before word author

Subject
Level
Primary
Grade
4

Articles - a, an & the - English Grammar lesson

Articles - a, an & the - English Grammar lesson Take the quiz - http://www.learnex.in/articles-a-an-the/ The 3 articles in English are a, an and the. The learner has ...

Answer

 

How do I know which one to use?

That's a very good question. Fortunately, the answer is quite simple. It's about listening to the words you're using. The rule for indefinite article usage is as follows:

Use a before nouns (or adjectives) that start with a consonant sound.

Use an before nouns (or adjectives) that start with a vowel sound.

Here are some examples from our English editing professionals:

Please give the dog a cookie. 
(The noun cookie starts with a consonant sound, so a must be used.)

Please give the dog a delicious cookie. 
(Our editing professionals have put the adjective delicious in front of cookie, but as you can see, delicious still starts with a consonant sound, so must still used.)

That's an old car. (In this case, the word after the article is old, which starts with a vowel sound. Consequently, our English editors must use an.)

Remember that you're listening here. This isn't about the letter or being a consonant or the letter being a vowel; it's about the sound they make (i.e., vowel sound or consonant sound).Here's another example that might help you understand:

I need to work for an hour before we go to dinner.

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