你这个表达，语法上没有错误的哦，意思是以前学过跳舞。小时候学过跳舞可以这样表达：When I was a child ，I learned to dance
你好，很高兴为你解答
我小时候学过跳舞
I learned to dance when I was young.
希望我的回答对你有帮助，满意请采纳。
I learned to dance when I was young.
When I was a little boy, I learned to dance
learn to do sth.
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