The name of the vowel is the long sound of the vowel.
Long a can be written in the word in these following ways:-
ai - when the ai digraph is used, it gives the long a sound. For example - rain, train, paint.
Ay - ay also gives the long a sound.
For example - tray, play, hay.
A small tip: looking at the above examples, we may remember that ai comes in the middle of the word and ay at the end.
Magic e- a_e
When vowel a is followed by a consonant and vowel e, the magician e rubs over some magic over the consonant to vowel a and makes it a long sound from a short sound magically.
For example cap - cape
Tap - tape
Hat - hate.
ea - ea also gives long a sound
For example - bread, thread, ready