[误] How you come to know him?

[正] How come you to know him?

注：惯用法在 come to do 的问句中，要将 do，did 等发问的虚词略去，这是古来的传统。但在现今的口语中可说 How did you come to know him? 美国口语还可以说 How come you didn\'t say anything?(你为何一言不发?)