YOU SAID:

i have an aubergine in my shoe

INTO JAPANESE

私は私の靴で茄子があります。

BACK INTO ENGLISH

I have eggplant in my shoes.

INTO JAPANESE

私の靴にナスがあります。

BACK INTO ENGLISH

Eggplant is my shoes.

INTO JAPANESE

ナスは、私の靴です。

BACK INTO ENGLISH

Eggplant is my shoes.