I find it easy __(learn) English

问题描述:

I find it easy __(learn) English

to learn
固定结构
find it adj. to do sth

to learn 'it'是形式主语,用不定式to learn 做真正主语。
而find it +形容词+ to do sth 是固定结构,所以不能用ing 形式做真正主语。

Learning/to learn

to learn

to learn,learn

to