Question forms
Auxiliaries, question words and tag questions.
The rules
- Question word + auxiliary + subject + verb: "Where do you live?"
- "Mean" needs the auxiliary "does": "What does this word mean?"
- Tag questions mirror the auxiliary: "you're coming" → "aren't you?"
- "How long" already asks about duration, adding "time" or "much" is redundant.
- Past questions use "did" + base verb: "Why did she leave?"
- "Which" asks about a limited set of options; "what" is open-ended.
Examples
- Where do you live.
- What does this word mean?
- You're coming to the party, aren't you?
- How long have you lived here?
- Why did she leave early.
- Which of these two options do you prefer?
Quick check
Pick an answer to see the rule behind it.
1.Which question is correct?
2.You're coming to the party, _____?
3.Which question is correct?
4._____ of these two options do you prefer?