More questions
Question Words
A1
Question words (who, what, where, when, why, how, which, whose) start information questions. They come before the auxiliary verb and subject.
Yes/No Questions
A1
Yes/no questions ask whether something is true and expect a yes or no answer. Form them by putting the auxiliary or 'be' before the subject.
Subject vs Object Questions
B1
When the question word is the subject (who or what does the action), no auxiliary is needed and word order stays like a statement. When it is the object, the usual question form with an auxiliary applies.