YOU SAID:

this homework is impossible we haven't even learnt how to properly do it yet

INTO JAPANESE

この宿題は不可能です私たちはまだそれを適切に行う方法を学んでいません

BACK INTO ENGLISH

This homework is impossible We have not yet learned how to do it properly

INTO JAPANESE

この宿題は不可能です私たちはまだそれを正しく行う方法を学びませんでした

BACK INTO ENGLISH

This homework is impossible We haven't yet learned how to do it right

INTO JAPANESE

この宿題は不可能です私たちはまだそれを正しく行う方法を学びませんでした

BACK INTO ENGLISH

This homework is impossible We haven't yet learned how to do it right