YOU SAID:

I ate pineapple for breakfast

INTO JAPANESE

朝食にパイナップルを食べた

BACK INTO ENGLISH

I had a pineapple for breakfast.

INTO JAPANESE

私は朝食にパイナップルを食べた。

BACK INTO ENGLISH

I ate a pineapple for breakfast.

INTO JAPANESE

私は朝食にパイナップルを食べた。

BACK INTO ENGLISH

I ate a pineapple for breakfast.