7. I didn't recognize you!
我都不认出你了!
如果两人讲讲话突然发现对方是自己失散多年的好友的话,你就可以很惊讶地说,"I didn't know it was you!" (我不知道原来就是你!) 不然就是 "I didn't recognize you!" (我都认不出你了!) 要是你认得某人,但他一副不认识你的样子,这时候你则可以说,"Hey! Don't you recognize me?" (喂!你不认得我了吗?)
这个 recognize 在这里是当「认出来」的意思,跟 know「知道」是不一样的意思。例如有人化装化很浓,你都认不出她了,你就可以说,"I don't recognize you!" 但你不能说,"I don't know you." 这两者是不一样的。