Утвердительные
I + am + V ing
you, we, they + are + V ing
she, he, it + is + V ing
I am doing homework
We are going to school
He is eating food
Отрицаиельные
I + am not + V ing
you, we, they + are not + V ing
she, he, it + is not + V ing
I am not doing homework
We are not going to school
He is not eating food
Вопросительные
Am + I + V ing
Are + you, we, they + V ing
Is + he, she it + V ing
Am I going to school?
Are you doing the homework?
Is he eating food?
Также можно сокращать:
I am - I'm
He is - He's
It is - It's
You are - you're
They are - they're