Модальный глагол can. Правила построения утвердительных, отрицательных и вопросительных предложений

Can - мочь, уметь

+ I/we/you/they/he/she/it can V. E.g. I can run. The boy can play tennis.

- I/we/you/they/he/she/it cannot (can't) V. E.g. I can't run. The boy can't play tennis.

Yes/No question

Can I/we/you/they/he/she/it V? E.g. Can you run? Can the boy play tennis?

Short answers

Yes, I/we/you/they/he/she/it can. No, I/we/you/they/he/she/it can't.

Special question

Why

What can I/we/you/they/he/she/it V?

Where

How

E.g. What games can you play? Where can the children play football?

Subject question (вопрос к подлежащему; ответ - само подлежащее)

Who can V? E.g. Who can play tennis? I can. Vitalik can.