YOU SAID:

if i had an apple i will be a farmer

INTO JAPANESE

私がリンゴを持っていたら私は農夫になります

BACK INTO ENGLISH

I would be a farmer if I had an apple

INTO JAPANESE

リンゴがあったら農夫になります

BACK INTO ENGLISH

If you have an apple, you will be a farmer

INTO JAPANESE

あなたがリンゴを持っているなら、あなたは農夫になります

BACK INTO ENGLISH

If you have an apple, you will be a farmer