正确的表达应该是learn.
learn的过去式 learnt、learned
learnv.学;学习;学到;学会
learn的过去分词 learnt、learned
I\'ve learnt from bitter experience not to trust what he says.
我已从痛苦的经验中得到了教训，不要相信他的话。
I learnt of her arrival from a close friend.
我从一位好友那里听说她到了。
We learnt how to draw buildings in perspective.
我们学习如何用透视法画建筑物。
