They went to the beach last weekend.划线部分提问..划线部分是went to the beach

问题描述:

They went to the beach last weekend.划线部分提问..划线部分是went to the beach

What did they do last weekend?是what 吗? 不应该是where吗?不是where,因为划线部分不是一个单纯的地点,而是做的一件事情,所以用what