钟表走的快慢,其实是与一个词有关,“时间”（time）.
如果走的准,一般叫keep good time （这个也可指人“准时”）.那么走得快,就是gain time, 走得慢一般是lose time. 当然如果需要表达快/慢多少分钟,就用gain/lose + XX minutes.下面给你一个例句：
This watch of mine keeps very good time. It hasn't gained or lost a minute since I had it.
当然,还有其他表达法,不过,最好记住这个,毕竟这个还算比较基础的.
另外,你还可以说：My watch is behind time.