Use Of The A And An Questions Medium
The rule for using "A" or "An" before words starting with a y sound is determined by the sound that follows the y. If the y sound is followed by a consonant sound, we use "A." For example, "a yellow car" or "a young boy." However, if the y sound is followed by a vowel sound, we use "An." For example, "an yellow umbrella" or "an young artist." The decision is based on the sound that follows the y, rather than the actual letter.