three years older than
彼女は私より三歳年上だ。
She is three years older than me.
彼女は彼より三歳年上です。
She is three years older than he is.
彼は私より三歳年上だ。
He is three years older than me.
彼は彼女より三歳年上です。
He is three years older than her.