YOU SAID:

This is the most useless thing I've seen on net

INTO JAPANESE

これは私がネットで見た最も役に立たないものです。

BACK INTO ENGLISH

This is the most useful thing I've seen on the net.

INTO JAPANESE

これネットで見た最も有用なものです。

BACK INTO ENGLISH

It is the most useful thing you saw this on the net.

INTO JAPANESE

ネット上でこれを見た最も有用なものです。

BACK INTO ENGLISH

It is the most useful thing I saw this on the net.

INTO JAPANESE

ネット上でこれを見た最も有用なものです。

BACK INTO ENGLISH

It is the most useful thing I saw this on the net.