When is your birthday?
When is your party?
When is his birthday?
When is his party?
When is her birthday?
When is her party?
When is +人称代词＋｀｀｀｀｀｀再给一下答句，给完我给满意回答哦My birthday is on ＋生日，一般只写月和日His birthday is on``````Her birthday is on``````至于内party的，我不太有把握，还是别误导你了．话说你是学生吧？几年级了？