YOU SAID:

My heart sank when I saw his face, completely destroyed by a botched surgery.

INTO JAPANESE

彼の顔を見たとき、私の心は沈みました。

BACK INTO ENGLISH

My heart sank when I saw his face.

INTO JAPANESE

彼の顔を見たとき、私の心は沈んだ。

BACK INTO ENGLISH

My heart sank when I saw his face.