I_(learn)to skate when I was a child.填什么?

问题描述:

I_(learn)to skate when I was a child.填什么?

learned/learnt

had learnt

I learned/learnt(learn)to skate when I was a child.
因为后面用的是一般过去时,所以前面时态对应用一般过去时
learn有两种过去式写法

I_learned(learn)to skate when I was a child.