Stessa logica delle negazioni: si inverte l'ausiliare, o si prende did.
| Tempo | Costruzione | Esempio |
|---|---|---|
| past simple, be | inversione | Were you there? |
| past simple, altri verbi | did + soggetto + base | Did you go? |
| past continuous | inversione di was/were | Were they working? |
| present perfect | inversione di have/has | Have you finished? |
| past perfect | inversione di had | Had he arrived? |
Attenzione
Quando la domanda riguarda il soggetto, l'ausiliare did sparisce e il verbo resta al passato:
- Who broke the window? ✅
- Who did break the window? ❌