YOU SAID:
i lost my favourite shoe
INTO JAPANESE
私は好きな靴を失った
BACK INTO ENGLISH
I have lost my favorite shoes
INTO JAPANESE
私は私のお気に入りの靴を失った
BACK INTO ENGLISH
I lost my favorite shoes
INTO JAPANESE
私のお気に入りの靴を失わ
BACK INTO ENGLISH
I lost my favorite shoes
Come on, you can do better than that.