Some of the best things that a city has offer can be found by mistake.
问题描述：
Some of the best things that a city has offer can be found by mistake.
原文翻译：城市里有些绝佳经典可能误打误撞发现的
that a city --在这里怎么理解?
has offer --在这里怎么理解
请说说主谓宾?
答
that 在这里引导后面的从句,做先行词使用,修饰best things