YOU SAID:
Hit the nail on the head.
INTO JAPANESE
頭に釘を打ちます。
BACK INTO ENGLISH
hammer a nail in the head
INTO JAPANESE
頭に釘を打つ
BACK INTO ENGLISH
nail in the head
INTO JAPANESE
頭に釘を打つ
BACK INTO ENGLISH
nail in the head
That didn't even make that much sense in English.