YOU SAID:

When i was seventeen, i had a very good year

INTO JAPANESE

17歳の時、とても良い年だった

BACK INTO ENGLISH

When I was 17, it was a very good year

INTO JAPANESE

17歳の時はとても良い年でした

BACK INTO ENGLISH

17 was a very good year

INTO JAPANESE

17年はとても良い年でした

BACK INTO ENGLISH

2017 was a very good year

INTO JAPANESE

2017年はとても良い年でした

BACK INTO ENGLISH

2017 was a very good year