回答

・First time I've heard of it.
・it's new to me

「第一次聽到」可以用現在完成時的「I've heard of it」或者「I have never heard of this before」來表達。
First time I've heard of it.
（因為我第一次聽到那個新聞，所以我很驚訝。）

it's new to me可以用來表達對我來說是新的（沒聽過）的意思。

Wow! That idea is new to me.
（哇！這個想法對我來說很新鮮。）

有幫助｜0