YOU SAID:

I heard it through the grapevine.

INTO JAPANESE

私は人づてに聞いた。

BACK INTO ENGLISH

I heard through the grapevine.

INTO JAPANESE

その知らせは人つてに聞いたよ。

BACK INTO ENGLISH

I heard the news through the grapevine.

INTO JAPANESE

その知らせは人つてに聞いたよ。

BACK INTO ENGLISH

I heard the news through the grapevine.