表达 “go way back with someone” 的意思是 “与某人是老相识”。它和 “know each other for a long time” 的意思相同，都可以描述两个人认识的时间很长，且有共同的经历。

• Tim and I go way back – we met at primary school.
  蒂姆和我是老相识，我们在小学的时候就认识了。
• My dad and Roger go way back. They’ve been friends since university and still see each other every few weeks even after all these years.
  我爸爸和罗杰是老相识。他们从上大学时起就是好朋友，而且这么多年过去了，两人仍是隔几周就聚一次。
• Laura said she knows someone who can help us with this new piece of work. Apparently, they go way back and have worked together many times before.
  劳拉说她认识一个能帮我们做这项工作的人。据说他们相识已久，而且多次共事。