YOU SAID:
I can't eat french fries in the dinner
INTO JAPANESE
私はディナーでフレンチフライを食べることができません
BACK INTO ENGLISH
I can not eat French fries at dinner
INTO JAPANESE
私は夕食にフレンチフライを食べることができません
BACK INTO ENGLISH
I can not eat French fries for dinner
INTO JAPANESE
私は夕食にフレンチフライを食べることができません
BACK INTO ENGLISH
I can not eat French fries for dinner
You've done this before, haven't you.