有谁知道alligator alligator a a a这首letter sound歌答:Phonics Letter -- A song A is for apple,a a apple,A is for apple,a a apple,A is for apple,a a apple,A A A!A is a vowel! the first letter of the alphabet.A is for ant,a a ant,A is for ant,a a ant,A is for ant,a a ant,A A A!A is a vowel! the ...