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