YOU SAID:
I'm singing in the rain
INTO JAPANESE
私は雨の中で歌っています
BACK INTO ENGLISH
I am singing in the rain
INTO JAPANESE
私は雨の中で歌います
BACK INTO ENGLISH
I will sing in the rain
INTO JAPANESE
私は雨の中で歌います
BACK INTO ENGLISH
I will sing in the rain
That didn't even make that much sense in English.