YOU SAID:

All of a sudden I heard scraping. Do you know the sound of fingernails on a chalkboard?

INTO JAPANESE

突然、擦り傷の音が聞こえました。黒板の爪の音を知っていますか。

BACK INTO ENGLISH

Suddenly, I heard the sound of scratches. Do you know the sound of the nails on the blackboard?

INTO JAPANESE

突然、引っ掻き傷の音が聞こえた。黒板の爪の音を知っていますか?

BACK INTO ENGLISH

Suddenly, I heard a scratch. Do you know the sound of nails on the blackboard?

INTO JAPANESE

突然、引っ掻き傷が聞こえました。黒板の爪の音を知っていますか?

BACK INTO ENGLISH

Suddenly, I heard a scratch. Do you know the sound of nails on the blackboard?