▲是的，How do you come to do sth 是英语中的固定句式，它的意思是“你是怎么……的？”，下面的句子摘自张道真《现代英语用法词典》：

How did you come to know him?

How do you come to know it?

How did you come to be meeting Mrs. Howard, Lewis?

How did you come to hear the news?

How do you come to be working with that set?

▲这类句式的主语也可以不是 you，而是其他人称。如：

How did Jean come to be invited to this party? （《现代英语用法词典》）

How did he come to break his leg?（《牛津高阶英汉双解词典》）

▲请注意下面的句子，how…为宾语从句：

I wonder how you came to miss your way. （《现代英语用法词典》）

He stubbornly refused to tell her how he had come to be in such astate.（《柯林斯高阶英汉双解学习词典》）