[译] 我认识了在我出生前就丢失了的哥哥。
[误] I recognized my elder brother, who was lost before I was born.

[正] I got acquainted with my elder brother, who was lost before I was born.
[注] recognize 表示“认识、认出”，含有再次听到或见到以前听过或见过的人或物。如表示“从不认识到认识……”，应该说 get acquainted with...