answer said 用法1.'I'll tell you where to get off.' answered t

answer said 用法
1.'I'll tell you where to get off.' answered the conductor.
2.'You'll have to get off here,' the conductor said.'This is as far as we go.'
3.'We're going back now,' said the conductor.
不明白1中answer的用法,为什么不是 the conductor answered.
第2句中,the conductor said成立,那第3句said the conductor又是怎么一种用法,十分不解,希望各位能给个明白的解释.
等待中的第二天。没想到竟然发了一个这么难的问题，看来英语的确很难啊。