How old are you?
What is your age?
May I ask your age?
May I know your age?
Could you tell me how old you are?
A: How old are you?你多大了?
B: I am just over twenty-two years old.我刚过 22 岁。
What is your birthday?
When is your birth date?
When were you born?
What is your date of birth?
May I ask your birth date?
May I ask the date of your birth?
I will be twenty-two by the end of this year.
A: Are you twenty-five years of age?你是25岁吗?
B: I will be twenty-two by the end of this year.到今年年底我就22 岁了。
⦁ by the end of意为“不迟于"，强调“最后时限"，如：by the end of this month (直至本月底为止)
I've just celebrated my twentieth birthday.
I am almost 18.
My birth date/birthday is September 1,1982.
My birth birthday is September 1,1982.
I was born on September 1,1982.
When and where were you born?
A: When and where were you born?你是何时何地出生的?
B: I was born in Shi Jiazhuang on March 5,1981.
You look very young.
A: You look very young.你看起来很年轻。
B: Actually,I'm thirty-two now.事实上我今年32 岁了。