YOU SAID:

I want to give a party at my mom's house tomorrow night

INTO JAPANESE

明日の夜、母の家でパーティーを開きたいです

BACK INTO ENGLISH

I want to have a party at my mother's house tomorrow night.

INTO JAPANESE

明日の夜、母の家でパーティーを開きたいと思っています。

BACK INTO ENGLISH

I want to have a party at my mother's house tomorrow night.