Yes / No questions
Invert the auxiliary verb and the subject. The main verb stays in the base form.
| Tense | Structure | Example |
|---|---|---|
| Present Simple | Do/Does + subject + verb? | Do you like tea? · Does she work here? |
| Past Simple | Did + subject + verb? | Did they arrive on time? |
| To be — present | Is/Are + subject + …? | Is she happy? · Are you ready? |
| To be — past | Was/Were + subject + …? | Was the film good? · Were they there? |
| Future | Will + subject + verb? | Will you come tomorrow? |
Wh- questions
Add a Wh- question word at the start. Word order: Wh-word + auxiliary + subject + verb.
| Wh- word | Asks about | Example |
|---|---|---|
| What | thing / action | What do you do? · What is this? |
| Where | place | Where does she live? |
| When | time | When did they arrive? |
| Who | person | Who did you call? |
| Why | reason | Why is she crying? |
| How | manner / degree | How are you? · How do you do it? |
| How much / many | quantity | How much does it cost? |
Who as subject — no auxiliary!
When who or what is the subject (= the doer), there is NO auxiliary inversion: ✓ "Who called you?" (Who = subject) vs. ✓ "Who did you call?" (You = subject, who = object).
Exercises
Choose the correct question form.
1. ___ she speak French?
2. ___ did they go after the concert?
3. ___ you at home yesterday?
4. Who ___ to you last night? (= who was the caller)