YOU SAID:
How do you do on this fine evening?
INTO JAPANESE
この夕方はどうしますか。
BACK INTO ENGLISH
What will you do in this evening?
INTO JAPANESE
あなたは今晩何をしますか?
BACK INTO ENGLISH
What do you do tonight?
INTO JAPANESE
今夜は何をするの?
BACK INTO ENGLISH
What will you do tonight?
INTO JAPANESE
あなたは今夜何をしますか?
BACK INTO ENGLISH
What do you do tonight?
INTO JAPANESE
今夜は何をするの?
BACK INTO ENGLISH
What will you do tonight?
INTO JAPANESE
あなたは今夜何をしますか?
it is unlikely that this phrase will ever reach equilibrium