我一碰见他就认出他了用英文怎么说

我们可以用 "I recognized him as soon as I saw him" 表达 "我一碰见他就认出他了"。

其中 "recognized" 是 "认出" 的意思，是动词 recognize 的过去式。"As soon as" 表示 "一...就..." 的意思。

例句:

I recognized him as soon as I saw him in the crowd. (我在人群中一看见他就认出他了)
She recognized her old friend from college as soon as she saw him at the party. (她在聚会上一眼就认出了她大学时的老朋友)
I recognized the painting as soon as I saw it, it was the one I had seen in the museum last year. (我一看见那幅画就认出来了，那是我去年在博物馆里看到的)