同学你好，该知识点来自沪江网校《英语零基础直达大学六级【8月班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
是的。
The writer wanted to go go Woodford Green 这是一个分句。
but连接第二个分句，as he didn't know the way, the conductor promised to tell him where to get off
as引导状语从句，也就是as he didn't know the way是状语从句
the conductor promised to tell him where to get off 是后一个分句的主句

祝同学学习进步~