YOU SAID:
i really enjoy skating on lakes but not rivers
INTO JAPANESE
私は川ではなく湖でスケートを楽しんでいます
BACK INTO ENGLISH
I enjoy skating on lakes instead of rivers
INTO JAPANESE
川ではなく湖でスケートを楽しんでいます
BACK INTO ENGLISH
I enjoy skating on lakes instead of rivers
You've done this before, haven't you.