YOU SAID:
I ate a sandwich yesterday for lunch
INTO JAPANESE
私は昨日の昼食にサンドイッチを食べました
BACK INTO ENGLISH
I ate a sandwich for lunch yesterday
INTO JAPANESE
私は昨日の昼食にサンドイッチを食べました
BACK INTO ENGLISH
I ate a sandwich for lunch yesterday
You've done this before, haven't you.