YOU SAID:

Did you buy me a cake?

INTO JAPANESE

あなたは私にケーキを買ったの？

BACK INTO ENGLISH

Did you buy a cake for me?

INTO JAPANESE

あなたは私のためにケーキを買いましたか？

BACK INTO ENGLISH

Have you bought a cake for me?

INTO JAPANESE

あなたは私のためにケーキを買いましたか？

BACK INTO ENGLISH

Have you bought a cake for me?