Polly had never learned to dance...是什么意思？

Polly had never learned to dance...

波莉从未学过跳舞。

Polly

n. Mary 的昵称；

例句
I'm a very girlie person while Polly is one of the lads.
我女孩子气十足而波莉却像个小男孩。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

never

adv. 从不，从来没有，一点也不，决不，<口>不会…吧，没有，不曾；

例句
The public never had faith in his ability to handle the job...
公众从来不相信他有能力胜任这一职位。

learned

adj. 有学问的，博学的，学术上的，精通某门学问的；v. 学习(learn的过去式和过去分词)，得知；

例句
They have learned the lessons of business management theory, and put them into action.
他们不仅学习了商业管理理论方面的课程，并且学以致用。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

dance

n. 跳舞，舞会，舞蹈艺术，舞曲；vi. 跳舞，手舞足蹈，摇晃，跳跃；vt. 使跳舞；

例句
The subject seems to dance with balletic grace.
受试者似乎跳着芭蕾舞般优雅的舞蹈。