a question

[karpatdoruk]

Question #: 4: He had an x-ray.
User's answer: False
Correct answer: True
Additional Notes: We use a before a consonant sound and an before a vowel sound. Here, the word starts with a vowel sound.



hi i dont understand why i was wrong because x-ray doesnt start with a vowel sound.may somebody explain why i was wrong?

[karpatdoruk]

Question #: 9: Is there a university there?
User's answer: False
Correct answer: True
Additional Notes: We use a before a consonant sound and an before a vowel sound.


Question #: 10: The doctors took a x-ray of my leg.
User's answer: True
Correct answer: False
Additional Notes: We use a before a consonant sound and an before a vowel sound. Here, the word starts with a vowel sound.


and also these are too what i couldnt understand

[Tdol]

It does start with a vowel sound (we say 'Ex-ray', which is different from 'xylophone, where it sounds like a 'z'). The choice of articles is based on the sound not the spellling:
An egg, an umbrella, an x-ray
A European, a university, a xylophone
It's the sound, not the spelling.