YOU SAID:

I need to do my homework but this is fun so I won't do my homework.

INTO JAPANESE

宿題をする必要がありますが、これは楽しいので宿題はしません。

BACK INTO ENGLISH

I need to do my homework, but I don't do it because it's fun.

INTO JAPANESE

宿題をする必要がありますが、楽しいのでしません。

BACK INTO ENGLISH

I need to do my homework, but it's not fun.

INTO JAPANESE

宿題をする必要がありますが、面白くありません。

BACK INTO ENGLISH

I have to do my homework, but it's not fun.

INTO JAPANESE

私は宿題をしなければなりませんが、それは面白くありません。

BACK INTO ENGLISH

I have to do my homework, but it's not fun.