YOU SAID:

I had a slice of cheese for breakfast

INTO JAPANESE

朝食にチーズを一切れ食べました

BACK INTO ENGLISH

I ate a piece of cheese for breakfast

INTO JAPANESE

朝食にチーズを食べました

BACK INTO ENGLISH

Ate cheese for breakfast

INTO JAPANESE

朝食にチーズを食べた

BACK INTO ENGLISH

Ate cheese for breakfast