YOU SAID:
There is a party tonight!
INTO JAPANESE
今夜はパーティーがある!
BACK INTO ENGLISH
Party is tonight!
INTO JAPANESE
今夜はパーティーが!
BACK INTO ENGLISH
Tonight I will party!
INTO JAPANESE
今夜、私はパーティーが!
BACK INTO ENGLISH
Tonight I will party!
That didn't even make that much sense in English.