她的课很生动用英语怎么说

"Her classes are lively" 是一种常见的表达方式，它表示课堂气氛活跃、生动有趣。

"Lively" 是形容词，来源于中古英语中的 "līflīce"，意思是活跃的、充满活力的。

例句：

Her English classes are always lively and engaging.
(她的英语课总是活跃有趣。)
The children's laughter made the room feel lively.
(孩子们的笑声使得房间变得充满活力。)
The party was lively and everyone had a great time.
(派对非常热闹，每个人都玩得很开心。)