at the party 是在“聚会上”如：I enjoyed myself at the party. 这次聚会我很快活。

We had a good time at the party. 晚会上我们玩得很愉快。There was any amount of food and drink at the party. 聚会上有的是吃的喝的。for the party：为了聚会例句：

1. We had all the details worked out for the party, and then Tony tried to help and blew everything apart.我们晚会的细节都就绪了，然后托尼想来帮助我们，一切都变乱了。That is all I have to say about the significance of the mass line and the need for the Party to continue to follow it in its work.关于我们党的工作中的群众路线的意义，关于我们党在工作中继续贯彻群众路线方面的任务，我所要说的就是这一些。We'll have to work out how much food we'll need for the party.我们应该估算一下这次聚会我们需要准备多少食物。如果不是表示“在聚会上”，也可以用其他介词的，比如用 to 表示“去参加聚会”。如：He persuaded her into going to the party. 他说服她参加这次聚会。Everyone brought their partner to the party. 所有人都携伴参加聚会。I’ve asked David to come to the party. 我已经邀请了大卫来参加派对。

先看两个例句：he met her at the meeting,he is preparing for the meeting前者是地点状语，表示在聚会上，后者是为了这个聚会做准备

at the party

网络

在宴会中;在晚会;在宴会上;在聚会;在晚会上

双语例句

1

Didn't I see you at the party last week

我在上周的聚会上见过你，对不对？

for the party

为党/为了聚会

There is no question of the taxpayer picking up the bill for the party.

要纳税人为该党买单是不可能的。

Have you fixed the time and date for the party

你们确定了晚会的钟点和日期吗？