即兴地

例句：

1. 1. The performer was so good that he made the audience forget they were watching an impromptu show.
   这位表演者太棒了，以至于观众都忘记了他们正在观看一场即兴表演。
2. 2. The children were playing in the park without any preparation, which is an example of an impromptu game.
   孩子们在公园里玩没有准备的游戏，这是即兴游戏的一个例证。
3. 3. She decided to surprise her parents with an impromptu dinner party.
   她决定给她的父母一个惊喜，举办一个即兴晚宴。