询问他的年龄用英文怎么说

"How old are you?"是询问年龄的常用英语句型。

来源："How"是副词，意思是“怎样”，"old"是形容词，意思是“年老的”，"are"是助动词，"you"是主语。

例句：

How old are you? 你多大了？
Can you tell me your age? 你能告诉我你的年龄吗？
I was wondering, how old are you? 我在想, 你多大了？