Chinese phrase
他什么时候过生日？ tā shén me shí hòu guò shēng rì
Meaning
When is his birthday?
When to use it
This asks when a male person's birthday is. It is a neutral, polite way to ask about his birthday in everyday conversation.
Example dialogue
我们要订蛋糕，他什么时候过生日？ wǒ men yào dìng dàn gāo tā shén me shí hòu guò shēng rì
We're going to order a cake. When is his birthday?
下周三吧，我记得他说过那天有空。 xià zhōu sān ba wǒ jì de tā shuō guò nà tiān yǒu kòng
Probably next Wednesday. I remember he said he was free that day.