YOU SAID:

This is gonna be a lot of fun, isn't it

INTO JAPANESE

これは多くの楽しみをするつもりじゃないです。

BACK INTO ENGLISH

This is not going to be a lot of fun.

INTO JAPANESE

これは多くの楽しみをするつもりはないです。

BACK INTO ENGLISH

This isn't going to be a lot of fun.

INTO JAPANESE

これは多くの楽しみをするつもりはないです。

BACK INTO ENGLISH

This isn't going to be a lot of fun.