英语翻译他和我的年龄一样大?顺便问一下,这封信是谁写的?翻译为英

We are the same age.
or: He is as old as I/me.

1)He is in the same age of me.
He is as old as me.
2)By the way,where did the letter come from?
By the way,who wrote this letter?

His age is the same as mine.

Who wrote this letter?

he is at my age
who wrote the letter

His age is the same as mine
By the way ,who wrote this letter

He is the same age as me.
Who wrote this letter?

1) He is at the same age of me.
2) By the way ,who wrote the letter ?

He is of the same age as mine.
Who wrote this letter?

He is the same age with me.
Who wrote this letter?