YOU SAID:

I don't think he really understands the concept of Halloween, but I'm not gonna be the one to spoil his fun.

INTO JAPANESE

彼はハロウィーンの概念を理解していないと思うけど私は彼の楽しみを台無しにするつもりはない

BACK INTO ENGLISH

I don't think he understands the concept of Halloween, but I'm not going to ruin his fun.

INTO JAPANESE

彼はハロウィンの概念を理解していないと思いますが、彼の楽しみを台無しにするつもりはありません。

BACK INTO ENGLISH

I don't think he understands the concept of Halloween, but I'm not going to ruin his fun.