倍数表达:I am twice as old as he.I am once older than he.
问题描述：
倍数表达:I am twice as old as he.I am once older than he.
不止两倍是不是可以说成 I am more than twice as old as he.和 I am more than once older than he.
答
i am twice as old as he ,不完整,要加 谓语动词 is、 was等等
i am once older than he 我没听过这种说法,不好说是错的,但建议少用
once 有曾经的意思,会有歧义