1.How old are you ?
你多大了
2.Hello ,What's your age ?
你好,你的年纪是什么?
3.Hi ,Can I know about your age ?
你好,我们知道你的名字吗?
4.Nice to meet you,I really want to know about your age ?
见到你很高兴,我真的想了解你的年龄是什么?
5.I am 20 years old ,what anout you ?
我20岁了,你呢?
6.When were your age ?
你什么时候出生的?