你多少岁用英语翻译为：How old are you?

how：

adv.怎样;如何（后接形容词或副词）多少，多么，多大

How Old Are You In 2001?

2001年你有几岁？

So he first asked some questions, and one of them was: How old are you?

所以他先问了一些问题，其中一个是：你几岁了？

How will the company be doing ten years further on?

十年以后公司的情况将如何呢？

How much will it cost, more or less?

这个大概得花多少钱？

I don't know how you can say things like that.

真想不到你怎么会说出这种话来。