to be

To be (auxiliary verb) in present tense

Positive forms

I am                          

You are                   

He is

She is

It is

We are

They are

Examples:

I am a teacher. 

You are an engineer.

He is a student.

She is a doctor.

It is a black cat.

We are married.

They are divorced.

Negative forms

I'm not (I'm not) 

You're not (You aren't/ You are not)

He isn't (He's not/ He is not)

She isn't (She's not/ She is not)

It isn't (It's not/ It is not)

We aren't (We're not/ We are not)

They aren't (They're not/ They are not)

Examples:

I'm not married.

You're not a doctor.

He's not at home.

She's not in the office.

It's not Sunday today.

We aren't divorced.

They're not from London.

Question forms

Am I.....................?

Are you................?                          

Is he.....................?                            

Is she....................?

Is it.......................?

Are we.............?

Are they............?

Examples of questions and answers:

Am I a doctor? Yes, I am.

Are you a nurse? No, you're not. 

Is he at home? Yes, he is. 

Is she a teacher? No, she's not.

Is it OK? Yes, it is.

Are we tired? Yes, we are.

Are they married? No, they're not.

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