英语中询问年龄的句子怎么说

How old are you?
你多大了？

问年龄嘛，这个简单，比如说：“How old are you?” 或者“Could you tell me how old you are?” 这样的问法都很常见。，还有啊，“What's your age?” 也挺常用的。，就是直接一点，哈哈。

How old are you? / How old is he/she/it?