learn的动词_ing形式

learn vt.& vi.学习，学会；习得；得知；记住

vt 1. 学习;学会learn （to do ）sth

He has learnt a new skill.

他学会了一项新技能。

My brother is learning English now.

我的弟弟正在学英语。

2. 认识到learn that...

He has learned that dishonesty does not pay.

他已经认识到不诚实是没有好报的。

3. 记住

The boy soon learned the poem by heart.

这男孩不久便能熟背这首诗了。

4. 教训

vi 1. 学,学习learn sth/learn from sb./sth

Why don't you learn from my mistakes?

你为何不从我的错误中吸取教训呢?

2. 得知,获悉learn of/about sth

We learned of his marriage in the newspapers.

我们从报上获悉他结婚了。

drawing n.绘画；制图；图画；图样

所以不存在learn doing