—вставьте глагол to be в нужной форме и переведите текст: 1. (not) a doctor, a student. 2. the on the table. 3. the capital of russia. 4. you students? 5. on the table? — преобразуйте предложения в вопросительный и отрицательные: 1. your uncle is a teacher. 2. your sisters are dancers. 3. you go to bed at 11 o'clock. 4. my mother prepared dinner yesterday.

I am not a doctor, I am a student я не врач, а студент
The book is on the table книга лежит на столе
Moscow is the capital of Russia Москва - столица России
Are you student? Ты студент?
What is on the table? Что лежит на столе?

Is your uncle a teacher?
Your teacher isn't a teacher
Are your sisters dancers?
Your sister aren't dancers
Do you go to bed at 11 o'clock?
You don't go to bed at 11 o'clock
Did my mother prepar dinner yesterday?
My mother didn't prepare dinner yesterday

I am not a doctor, I am a student. The book is one the table. Moscow is the capital of Russia. Are you students? What is on the table?
Я не доктор, я - студент. На столе книга. Москва - столица России. Вы студенты? Что на столе? 

1. Your uncle isn't a teacher. Is your uncle a teacher?
2. Your sisters aren't dancers. Are your sisters dancers?
3. You don't go to bed at 11 o'clock. Do you go to bed at 11 o'clock?
4. My mother didn't prepare dinner yesterday. Did my mother prepare dinner yesterday?