A hint to remember when to use “a/an” is when the word after “a/an”starts with a vowel (a, e, i, o, u.) use “an”
when it starts with a consonant (B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, W, X, Z, and sometimes Y.) use “a”
I want an Apple
I want a Banana