❓ Question Forms & Indirect Questions

How to ask questions correctly — from basic to polite indirect forms

B1 10 min read 5 sections

Yes/No Questions

To form yes/no questions, move the auxiliary verb before the subject. If there's no auxiliary, add "do/does/did":

StatementQuestionRule
She is happy.Is she happy?Invert "be"
They are coming.Are they coming?Invert "be"
He can swim.Can he swim?Invert modal
She has finished.Has she finished?Invert auxiliary "have"
You like coffee.Do you like coffee?Add "do"
She works here.Does she work here?Add "does" (verb loses -s)
They went home.Did they go home?Add "did" (verb → base form)
Tip: When you add "does" or "did," the main verb returns to its base form: "She works" → "Does she work?" (not "Does she works?"). "They went" → "Did they go?" (not "Did they went?"). The tense marking moves to the auxiliary.

Wh-Questions

Wh-questions use question words (who, what, where, when, why, how) followed by the auxiliary + subject pattern. But there's a critical exception: when the question word IS the subject.

Question WordAs Object (needs auxiliary)As Subject (no auxiliary)
WhoWho did you see? (you saw someone)Who saw you? (someone saw you)
WhatWhat did she say? (she said something)What happened? (something happened)
WhichWhich one did you choose?Which team won?
Tip: Subject questions DON'T use do/does/did. Compare: "Who called you?" (who = subject, calling) vs "Who did you call?" (who = object, being called). If the question word replaces the subject, the sentence keeps normal SVO order with no auxiliary needed.

Tag Questions

Tag questions are short questions added to the end of a statement to confirm information or invite agreement. The rule: positive statement → negative tag, negative statement → positive tag.

StatementTagFull Sentence
You are a student,aren't you?You are a student, aren't you?
She can swim,can't she?She can swim, can't she?
They went home,didn't they?They went home, didn't they?
He doesn't like coffee,does he?He doesn't like coffee, does he?
You haven't been there,have you?You haven't been there, have you?
Let's go,shall we?Let's go, shall we?
Tip: The tag must match the auxiliary/modal of the main clause. If there's no auxiliary, use do/does/did: "She speaks French, doesn't she?" Special cases: "I am" → tag is "aren't I?" (not "amn't I"). "Let's" → "shall we?"

Indirect Questions

Indirect questions are embedded inside polite phrases like "Can you tell me...?", "Do you know...?", "I wonder..." They use STATEMENT word order (subject before verb), not question order. This is extremely tricky for all learners.

Direct QuestionIndirect QuestionChange
Where is the station?Can you tell me where the station is?is → the station is
What time does the shop close?Do you know what time the shop closes?does close → closes
How much does it cost?Could you tell me how much it costs?does cost → costs
Is she coming?Do you know if she is coming?Add "if/whether" for yes/no
Did he pass the exam?I wonder whether he passed the exam.Add "whether/if"
Tip: The key rule: after "Can you tell me," "Do you know," "I wonder," etc., use STATEMENT word order. The verb follows the subject normally: "Can you tell me where the station is?" (NOT "where is the station"). For yes/no questions, add "if" or "whether."

Common Question Errors for German & Russian Speakers

German and Russian question formation works differently, leading to predictable errors in English:

MistakeCorrectWhy It Happens
"How looks it?""What does it look like?"German word order: "Wie sieht es aus?"
"What means this word?""What does this word mean?"Missing "do/does" auxiliary
"Where goes the train?""Where does the train go?"German: "Wo fährt der Zug?"
"Have you a pen?""Do you have a pen?"German: "Hast du einen Kuli?"
"Is it here the bank?""Is the bank here?"Russian word order influence
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