YOU SAID:
sometimes when i get sad i cry
INTO JAPANESE
時々悲しくなると泣きます
BACK INTO ENGLISH
Sometimes I cry when I feel sad
INTO JAPANESE
悲しくなると泣くことがあります
BACK INTO ENGLISH
You may cry when you feel sad
INTO JAPANESE
悲しくなると泣くかもしれません
BACK INTO ENGLISH
You may cry when you feel sad
That didn't even make that much sense in English.