无论改什么问句,时态是不变的,变的只是句式.
现在进行时的特问句结构是：特殊疑问词+be+主语+剩余部分+?
例：I am having an English lesson now.→What are you doing now?
They are playing games at the moment.→What are they doing at the moment?
He is reading under the tree.→对reading提问：What is he doing under the tree?
→对under the tree提问：Where is he reading?