同桌的你的英文：
My Old Classmate

The Old Mandarin
老官吏

You old misery!
你这个爱抱怨的老家伙！

It is an old aphorism.
这是一句老格言。

Old friends and old wine are best
朋友是旧的好;古交友情深,陈酒香味醇

Old friends and old wines are best
陈酒味醇,老友情深

That girl is not my classmate.
那女孩不是我同学。

This girl is my classmate.
这个女孩是我的同学。

The children mocked their handicapped classmate.
这些孩子模仿他们的残疾同学。

I have a new classmate.
我有一个新同学。

She is the tallest among her classmates.
她在她同学之中是最高的。