be at the party

• 参加宴会

be at the party的用法和样例：

例句

1. She wore a gaudy costume to the party.
   她著一身色彩艳丽的服装参加宴会。
2. So many people came into the party that Helen had to press several of her women guests into service to help with refreshments.
   许多人来参加宴会，因此海伦不得不请几位女宾帮忙上点心。