He looks much younger than he is.than后为什么会有主语和be动词
问题描述：
He looks much younger than he is.than后为什么会有主语和be动词
He looks much younger than he is.如果这个句子是完整的,那he is后应是什么?都什么时候than后会有这种结构?
答
He looks much younger than he is.
than后面是一个比较状语从句,he is 后面省略了for his age.
应翻译成：
他看上去要比他实际的年龄小许多.