YOU SAID:
my party will be at your house tomorrow morning at nine
INTO JAPANESE
私のパーティーは明日の朝9時にあなたの家で
BACK INTO ENGLISH
My party will be at your house at 9am tomorrow morning
INTO JAPANESE
私のパーティーは明日の朝9時にあなたの家で行われます
BACK INTO ENGLISH
My party will be at your house at 9am tomorrow morning
You've done this before, haven't you.