阅读下面这首宋词,然后回答问题。(8分)
添字采桑子·芭蕉
李清照
窗前谁种芭蕉树?阴满中庭。阴满中庭,叶叶心心,舒卷有余情。 伤心枕上三更雨,点滴霖霪。点滴霖霪,愁损北人,不惯起来听。
[注] 该词作于作者南渡以后。
请简要概括上片中芭蕉树的形象特点。(4分)
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词人在下片是如何抒发思想感情的?(4分)
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