<span>I think
that this excerpt from chapter 23 of The Adventures of Huckleberry Finn most
clearly illustrates that the duke is someone who does not take responsibility
for his actions and would rather blame
others if something does not go well:</span>
…Well, when
the place couldn't hold no more people the duke he give a fellow a quarter and
told him to tend door for him a minute, and then he started around for the
stage door, I after him; but the minute we turned the corner and was in the
dark he says:
«Walk fast
now till you get away from the houses, and then shin for the raft like the
dickens was after you!»….
The word idea starts with a vowel and the adjective needed shouldn't also end with a vowel. And in this case, you can't use a because it's a vowel. So, you use an.
