YOU SAID:
we went to the party yesterday with some close friends
INTO JAPANESE
昨日は親友とパーティーに行きました
BACK INTO ENGLISH
I went to a party with my best friend yesterday
INTO JAPANESE
昨日、親友とパーティーに行きました
BACK INTO ENGLISH
I went to a party with my best friend yesterday
Come on, you can do better than that.