помогите пожалуйста. вроде понимаю, но не понимаю, пхп.

Это презент континьес, схема предложений такая:

[подлежащее]

[сказуемое: to be + глагол с окончанием ing / в отрицательных to be + not + глагол с окончанием ing]

[второстепенные члены предложения]

_____________________

2. is reading / isn't reading

3. is painting /isn't painting

4. is skating /isn't skating

5. is singing / isn't singing

6. is building / isn't building

7. is studying / isn't studying

8. is playing / isn't playing

9. is dancing / isn't dancing

10. is coloring / isn't coloring

11. is blushing / isn't blushing

12. are fighting / aren't fighting