What are the best books to study Indefinite articles?

Words starting with "u" that sound like "yu"

When the letter "u" is pronounced as "yu" ("you"), the article "a" is used. For example:

·       This is a good university.

·       Her company is a unicorn in a short span.

 Words starting with "eu" that sound like "yu"

When "eu" is pronounced as "yu", "a" is used. For example:

·       She is a European.

·       This is a Euro note. 

Words starting with "one"

"One" is an exception because the "o" sound is pronounced as the consonant "w". For example:

·       Look at a one-eyed dog!

·       She is a one-man army!

Silent "h"

When the "h" is silent at the beginning of a word, the following vowel sound dictates the use of "an". For example:

·       I waited for an hour.

·       Joy is an honest boy.

Abbreviations

If an abbreviation starts with a vowel sound (even if the first letter is a consonant), "an" is used. For example:

·       She holds an MBA degree.

·       Mike is an FBI agent.

Use 'a' when the 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 or with a mute 'h'. For example:

Ø  She saw a big elephant in the park.

Ø  She needs an umbrella as it's raining outside.

Ø  It is an honor to be here.

Ø  She is a European.

The indefinite article is used to refer to something for the first time or to refer to a particular member of a group or class. For example:

Ø  Would like to have a drink?

Ø  Did you get a job?

Use 'a' with names of jobs. For example:

Ø  She wants to be a doctor.

Ø  Joe is a dancer.

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