When did you get to know Jack?急

When did you get to know Jack?急
When did you get to know Jack?急

When did you get to know Jack?急
你什么时候认识杰克的?

你从什么时候开始了解JACK的

When did you get to know Jack?
你什么时候开始认识的杰克？
get to 有逐渐。。。
我是从事英语的，不明再问。