He is able to grasp the theory only once you explain it to him这句有语法错误吗?
问题描述：
He is able to grasp the theory only once you explain it to him这句有语法错误吗?
我的意思是“只要解释一遍他就能掌握”
答
你的句子预防上不通的.如果once你当做连词来用意思是“一.就.”,前面就不能加only.你加了only想表示次数,那这个两个句子就缺少连词连接
You explain the theory to him once and he can grasp it.