他非常年轻用英文怎么说读

"He is very young" 用英语可以说为 "He is very youthful".

"Youthful" 来源于英文单词 "youth"，意思是 "年轻的，有青春气息的".

例句：

He still has a youthful appearance despite his age.
他年龄大了，但仍然显得很年轻。
She exudes a youthful energy that inspires everyone around her.
她散发着年轻的活力，激发了周围每个人的灵感。