YOU SAID:
Hello! I'm going to have a lit party today, and you're invited!
INTO JAPANESE
こんにちは!今日はパーティーを開きます。招待されます!
BACK INTO ENGLISH
Hello! I will have a party today. I will be invited!
INTO JAPANESE
こんにちは!今日はパーティーがあります。招待されます!
BACK INTO ENGLISH
Hello! There is a party today. I will be invited!
INTO JAPANESE
こんにちは!今日はパーティーがあります。招待されます!
BACK INTO ENGLISH
Hello! There is a party today. I will be invited!
That didn't even make that much sense in English.