要用动词的ing形式

My learning steps have been written on paper.

我的学习步骤已经写在纸上了。

2

He always likes to parade his learning in front of girls.

他总是喜欢在女孩面前炫耀自己的学识。

3

I have signed up for the English learning course.

我报名参加了英语学习课程。

learning它的原型是learn，后面动词用不定式，也就是learn to do 意思是“学会做…”

h后面的动词形式是to+动词原型