YOU SAID:

You have studied this before?

INTO JAPANESE

あなたは以前にこれを勉強したことがありますか？

BACK INTO ENGLISH

Have you studied this before?

INTO JAPANESE

これを勉強したことがありますか？

BACK INTO ENGLISH

Have you studied this?

INTO JAPANESE

これを勉強しましたか？

BACK INTO ENGLISH

Did you study this?

INTO JAPANESE

これを勉強しましたか？

BACK INTO ENGLISH

Did you study this?