Subject-auxiliary inversion in questions
Questions are formed from statements by inverting the subject and auxiliary. In the present and past simple, the auxiliaries do/does and did come before the subject, which is followed by the bare infinitive. Be as a main verb can also come before the subject:
| Statement | Question |
|---|---|
| You can help me. You have lived here for some time. You would have done the same. You are staying at this hotel. She likes skating. They arrived yesterday. I am late. |
Can you help me? How long have you lived here? Would you have done the same? Are you staying at this hotel? Does she like skating? When did they arrive? Am I late? |
