she went to the park 变成一般疑问句

Did shen go to the park?

一般疑问句就是要把谓语助词放在句首，应为是过去时态，所以用did，那么谓语动词就应该恢复原型，went 的原型就是go。

did she go to the park？

did she do to the park?

Did she go to the park？