YOU SAID:
I don't know; how many loaves of bread have you eaten in your lifetime?
INTO JAPANESE
わからない;一生に何斤のパンを食べましたか?
BACK INTO ENGLISH
I don't know; how many loaves of bread did you eat in your lifetime?
INTO JAPANESE
わからない;一生で何斤のパンを食べましたか?
BACK INTO ENGLISH
I don't know; how many loaves of bread did you eat in your lifetime?
You've done this before, haven't you.