Questions are formed from affirmativeA declarative sentence indicating "yes"; also called a positive sentence. E.g.: John likes squash a lot. sentences with partial inversionA structure in which a verb or an auxiliary precedes the subject. E.g.: "Here comes the sun." (auxiliaryA helping verb used with main verbs to express mood, voice and tense. E.g.: I can't stand when I am disturbed. ("can", "am") + subjectThe person or thing that performs the action of a verb or that is described by a verb. E.g.: Andy has never been to Brunei. ("Andy") + verbA part of speech that expresses an action or a state. E.g.: John seldom plays tennis.).

Could you tell me the way to the station?
Have you been here for long?
Where are you staying?

Partial inversion in question tags
Partial inversion Partial inversion with AS, SO, NEITHER, NOR + auxiliary + subject to express agreement