YOU SAID:

Tonight, the party is coming

INTO JAPANESE

今夜、パーティーを来ています。

BACK INTO ENGLISH

Tonight come party.

INTO JAPANESE

今夜はパーティーに来る。

BACK INTO ENGLISH

I will come to the party tonight.

INTO JAPANESE

私は今夜​​パーティーに行きます。

BACK INTO ENGLISH

I am going to a party tonight.

INTO JAPANESE

私は今夜​​パーティーに行きます。

BACK INTO ENGLISH

I am going to a party tonight.