老同學的用法和樣例：
例句
-
你和中學時的老同學保持聯繫的有多少？
How many of your old school friends do you keep up with? -
今天早上我在超級市場碰見了一個老同學。
I ran into an old schoolfriend at the supermarket this morning. -
我想尋找我的一個老同學。
I want to search out an old school friend. -
我要去看望我的一位老同學。
I'm going to call on one of my former classmates.
