As a guide, pay more attention to the initial sound instead of the initial letter. So, if the starting letter of the acronym is "S" then the article to be used is "an" because "S" sounds like /es/. The captain sent an SOS just before the ship sank.
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Teacher EricThe same goes for "LG". You should say, "I bought an LG TV." As a rule, use "A" before a consonant sound and "An" before a vowel soundI still don't quite get it. How does LG sound like a vowel tho? I mean it sounds exactly like the letter 'L' to me...
sreesriHi Jones,HI sri - was this a typo?
Though the starting word for university is U, an vowel.