Допоміжне дієслово: did (do)

Головне дієслово: V2 (P) \ Vinf (N, Q, WHQ)

Позитивне: Суб'єкт + V2 + ...

I walked the dog.

She studied math.

Негативне: Суб'єкт + did + not + Vinf+ ...

I did not walk the dog.

She did not study math.

Запитання: did + суб'єкт + Vinf + ... ?

Did you walk the dog?

Did she study math?

Відкрите запитання: Запитальна частина + did + суб'єкт + Vinf + ... ?

Where did you walk the dog?

Why did she study math?