You ask a yes or no question to get yes or no as the answer. Use the verbs be, have or do or any of the helping verbs, to ask yes or no questions.
Can you swim?....Yes.
Are they coming?....No.
Is it raining?....No.
May I come in?....Yes
In questions, the helping or auxiliary verbs come before the subject of the sentence. When be and have are used as ordinary verbs, they come before the subjects, too.
Jim is ill today. (Statement)
Is Jim ill today? (Question)
She has an older brother. (Statement)
Has she an older brother? (Question)
The cats want to be fed. (Statement)
Do the cats want to be fed? (Question)
We should go now. (Statement)
Should we go now? (Question)
It will rain tomorrow. (Statement)
Will it rain tomorrow? (Question)
You may use my computer. (Statement)
May I use your computer? (Question)
Kate can ride a bike. (Statement)
Can Kate ride a bike? (Question)
Here are some different ways of asking the same question.
Has he a sister called Jane?
Does he have a sister called Jane?
Has he got a sister called Jane?
WH questions usually include the verbs be, have, do or any of the helping verbs.
To ask for facts, use the question words what, which, who, whom, how, when, where. The helping verbs in wh- questions usually come before the subject. So does the verb be when it is used as an ordinary verb.
Where are you?
What is David saying?
How did you get up here?
Why was the girl crying?
Which color do you prefer?
Who is she going to invite to her party?
Whom is she going to invite to her party?
What is your problem?
When do the stores open in the morning?
Where shall I put this box?
What have you done to my computer?
How am I going to finish all this work?
What would you like for dinner?
Whose dictionary is this?
Where is your house?
Whose wallet is this?
Why are you always late?
Who wrote this book?
Which of the two boys is smarter?
What size do you wear?
What old is he?
Where is Jeff going to get a haircut?
If the wh- question word is the subject of the question, it comes before the verb.
For examples :
Who told you that?
What made you change your mind?
Is he tall?
Yes, he is.
Do you know the answer?
Yes, I know.
Is Sara at home?
No, she is not.
Do they know any grammar?
Yes, they know.
Are all of you coming to my house this evening?
Yes, we all are coming.
Is Mrs. Chen your English teacher?
No, Mrs. Chen is not.