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To make a question with the verb to be, we take the verb, the subject and the verb, and we swap the subject and the verb around.

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For example, I am cooking. To make a question, we can say, am I cooking? Am I cooking?

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If we want to ask what, we can say, what am I cooking? I am cooking an omelette.

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So, for example, what, mm, mm, plus the verb, plus ing.

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Let's say the verb is do.

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And we want to ask what somebody is doing.

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It's not what you are doing.

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Remember, we need to change the you and the are.

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So, what you are doing becomes, what are you doing?

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So, if we look at some example sentences using the verb to be, we can swap the subject and the verb to make a question.

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For example, you are learning. This is an affirmative sentence. It's true. You are learning.

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But to make a question, we will change you and are. And what is the question? Are you learning?

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Are you learning? What about it is sleeping? This is an affirmative sentence. It is sleeping.

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To make a question, we change it and is. So, it is sleeping becomes, is it sleeping?

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Yes, it is. Or no, it is not. What about we are playing tennis? How can we make it a question?

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We are playing tennis becomes are we playing tennis? Yes, we are. Or no, we are not. And

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They are talking. How can we make they are talking a question? We change they and are and the question is are they talking? Yes they are or no they are not.