She wants to drink some juice.划线部分提问

What would she like? or: What does she want?
提问别人想吃点或喝点什么的时候一般用:
“What would …（sb）like?”“What do/does sb want?”

应该是what does she want to do?
因为drink some juice 为动词，所以用do代替，又是做一件事，用what来提问。
因为drink有要被提问，所以说不是问别人想吃什么的。
而want没有划线，所以照划线部分提问，want应该出现在提问句中，want是实义动词，需要助动词，而she为第三人称单数，所以助动词用does。want to do sth.。want后面加动词不定式。

Is she wants to drink any juice?

What does she like?

what does she want to do?

what does she want to do ?