"Do you need to go to the bank?"
Translation:¿Necesitas ir al banco?
Preposition combines with Masculine Definite Article to form Contraction :- a + el = al (to/towards the...)
de + el = del (of/from the...)
He's asking whether it's grammatically possible to not use a contraction, not what the contractions are.
I must be a real dunce, but I just cannot get the hang of when I should use "al" or "del". Help please
It is a really hard concept.
One is a contraction of a + el and the other is a contraction of de + el.