I first met Tom two years ago,

I first met Tom two years ago, just after he was released from prison.
兩年前我第一次見到Tom 正值他出獄之後

1.when 當 （after是連接詞 不必重複）
2.just 正好/ 恰好
3.very 非常
4.who 誰
如果要當關係代名詞 應該寫成：
Two years ago, I first met Tom, who was just released from prison.