Yes/No questions — how to form them — englishillustrated.com

What are yes/no questions?

Yes/no questions are questions that ask for a simple 'yes' or 'no' answer. They are very common in everyday English. These questions start with an auxiliary verb like 'do', 'does', 'did', 'is', 'are', 'can', or 'will'. The main difference between a statement and a yes/no question is the word order.

How to form yes/no questions

To make a yes/no question, move the auxiliary verb to the beginning of the sentence, before the subject. The basic pattern is: Auxiliary verb + Subject + Main verb + Object? For example: 'Do you like coffee?' In this question, 'do' is the auxiliary verb that moves to the front.

Different tenses and question forms

Different tenses use different auxiliary verbs. Present simple uses 'do' or 'does'. Past simple uses 'did'. Present continuous uses 'is', 'are', or 'am'. Future simple uses 'will'. Modal verbs like 'can', 'could', 'should', and 'must' also move to the front. The rule is always the same: put the auxiliary verb first.

How to Form a Yes/No Question — Step by Step

To form a yes/no question in English, you need to invert the subject and the auxiliary verb. This creates a question that expects a "yes" or "no" answer. The process is straightforward once you understand the basic word order pattern.

Identify the auxiliary verb

Look for the auxiliary (helping) verb in your sentence. In statements with auxiliary verbs like "be," "have," "do," or modals (can, will, should, etc.), the auxiliary comes before the main verb.

She is studying.

Auxiliary: "is"

They have finished the project.

Auxiliary: "have"

You will arrive tomorrow.

Auxiliary: "will"

Move the auxiliary to the front

Place the auxiliary verb at the beginning of the question, before the subject. The subject then comes after the auxiliary.

Is she studying?

Auxiliary "is" moved to the front; subject "she" follows

Have they finished the project?

Auxiliary "have" moved to the front; subject "they" follows

Will you arrive tomorrow?

Auxiliary "will" moved to the front; subject "you" follows

Keep the main verb and other words in order

Everything after the subject remains in the same order as in the statement. The main verb stays after the subject, followed by any objects or adverbs.

Are you eating breakfast now?

Word order: auxiliary (are) + subject (you) + main verb (eating) + object (breakfast) + adverb (now)

Add a question mark

End the question with a question mark (?) to show it is a question. This is essential in written English.

Special case: Simple present and simple past with "do"

For simple present and simple past statements that do not have an auxiliary verb, you must add "do" or "did" to form a question. This auxiliary is inserted at the front, and the main verb returns to its base form.

Statement: You like coffee.

Question: Do you like coffee?

The auxiliary "do" is added; the main verb "like" stays in base form

Statement: She watched the film yesterday.

Question: Did she watch the film yesterday?

The auxiliary "did" is added; the main verb returns to base form "watch"

Quick reference: Yes/no question formation by tense

Tense	Auxiliary Verb	Example Question
Simple Present	do / does	Do you study English?
Simple Past	did	Did they arrive on time?
Present Continuous	am / is / are	Are you working right now?
Past Continuous	was / were	Were they playing outside?
Present Perfect	have / has	Have you seen that movie?
Past Perfect	had	Had she left before noon?
Future Simple	will	Will you help me tomorrow?
Present Perfect Continuous	have / has	Have you been waiting long?
Past Perfect Continuous	had	Had they been working all day?
Future Continuous	will	Will she be studying at eight?

Formula

? Question

Do/Does + Subject + Main verb + Object?

Do you like ice cream?

Examples

Do you speak English?

Present simple · Everyday question

Did she go to the party yesterday?

Past simple · Common usage

Is he working today?

Present continuous · Current action

Will you help me tomorrow?

Future simple · Future plans

Can they swim?

Modal verb · Ability question

Have you finished your homework?

Present perfect · Recent action

When to use it

Daily conversations

Use yes/no questions to ask for simple information or check facts in everyday talks with friends and family.

"Do you want tea or coffee?"

Work and school

Ask yes/no questions to get quick answers from colleagues or teachers about meetings, deadlines, or tasks.

"Did you receive the email I sent?"

Shopping and services

Ask yes/no questions to check if something is available or to confirm details with shop workers or service providers.

"Do you have this shirt in size medium?"

Getting quick answers

Yes/no questions are fast and efficient when you only need a simple 'yes' or 'no' response.

"Can you help me with this homework?"

Signal words

Do/Does Did Is/Are/Am Will Can/Could Should Must Have/Has Would May/Might

Common Mistakes

Wrong

You like coffee?

✓

Correct

Do you like coffee?

You need to move the auxiliary verb 'do' to the front in present simple questions.

Wrong

Did you went to school?

✓

Correct

Did you go to school?

After 'did', use the base form of the verb, not the past tense form.

Wrong

You are going to the party?

✓

Correct

Are you going to the party?

In present continuous yes/no questions, the auxiliary verb must move to the front before the subject.

Wrong

You can swim?

✓

Correct

Can you swim?

Modal verbs like 'can' must move to the beginning to form a question.

KEY TAKEAWAYS

What to Remember

Yes/no questions start with an auxiliary verb like do, does, did, is, are, can, or will.
Move the auxiliary verb before the subject to change a statement into a yes/no question.
The word order pattern is: Auxiliary verb + Subject + Main verb + Object + question mark.
Yes/no questions expect only 'yes' or 'no' as an answer, unlike wh- questions.
If there is no auxiliary verb in the statement, add 'do' or 'does' to form the question.

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Types of questions in English — guide

Wh- questions — who, what, where, when, why, how