YOU SAID:

If I were three I would eat my shoe

INTO JAPANESE

私は3だったら、私は私の靴を食べるだろう

BACK INTO ENGLISH

Would I eat my shoe if I were 3,

INTO JAPANESE

3 がなら私の靴を食べるだろう

BACK INTO ENGLISH

3 If you will eat my shoes

INTO JAPANESE

3 私の靴を食べるようになる場合

BACK INTO ENGLISH

3 If you will eat my shoes