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Forming Questions

Learn how to form yes/no questions and wh- questions in English using auxiliary verbs.

Last updated: 7 January 2026

★★☆☆☆ Level 2GrammarQuestionsSentence Structure3 min read

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Two Types of Questions

TypeExpected answerExample
Yes/No questionsYes or NoDo you like coffee?
Wh- questionsA piece of informationWhere do you live?

Forming Yes/No Questions

Invert the auxiliary verb and the subject.

TenseStatement → Question
Present simpleShe works. → Does she work? / They play. → Do they play?
Past simpleHe went. → Did he go?
Present continuousShe is sleeping. → Is she sleeping?
Will futureThey will come. → Will they come?
To be (no other aux)He is ready. → Is he ready?
Note If there is no auxiliary verb in the statement (present/past simple), use do / does / did in the question. The main verb returns to the base form.

Forming Wh- Questions

Wh- word + auxiliary + subject + base verb?

Wh- wordAsks about
Whatthings, actions
Whereplace
Whentime
Whyreason
Whoperson (subject)
Whomperson (object)
Whichchoice
Howmanner / degree
How much/manyquantity
How longduration
How oftenfrequency

Where do you live? Why did she leave? How long have you been here?

Subject Questions

When who or what is the subject, there is NO auxiliary inversion:

Normal questionSubject question
Who did you call? (you = subject)Who called you? (who = subject → no did)
  1. 1

    Identify the tense and auxiliary

    to be / do-does-did / will / have / etc.
  2. 2

    Move the auxiliary before the subject

    Do you… / Is she… / Did they…
  3. 3

    For Wh- questions, add Wh- word at the front

    Where do you…?
  4. 4

    Check the main verb is in base form

    Did she GO (not went).

Make a question about the underlined word: She lives in [Rome].

Where does she live?

Real world: job interview

"Can you tell us a little about yourself?" "How long have you been working in this field?" "Why do you want to work for our company?" "What are your main strengths?"

Real world: customer service / survey

"Would you recommend our service to a friend?" "How satisfied are you with your experience today?" "Is there anything we could improve?" "Did you find everything you were looking for?"

Tip Questions are at the heart of everyday communication. You'll find them in job interviews, medical consultations ("Does it hurt when I press here?"), surveys, opinion polls, and customer service scripts ("How can I help you today?").

Practice Problems

Form a yes/no question: They played tennis yesterday.

Show answer
Did they play tennis yesterday?

Form a Wh- question about the underlined part: He went to [the market].

Show answer
Where did he go?

Form a yes/no question: She is cooking dinner.

Show answer
Is she cooking dinner?

Form a subject question: Someone knocked on the door.

Show answer
Who knocked on the door?