<h1>use of "a" with a diphthong</h1><h2>Uso de "a" con un diptongo en Inglés</h2>

We already know that the indefinite article has two forms: “a” before an initial consonant sound and “an” before an initial vowel sound.

That’s a job for a cowboy.

An entertainment website contains information.

However, there are two exceptions:

-“a” is also used when the following word begins with the diphthong   /ˈjʊ/

A European citizen.

Or also the diphthong /wʌ/.

On a one-way roadway when each lane is marked with a broken white line, you may drive in any line.