She bought a new computer last week разбирите предложение отрицательное вопрос when,where,why

She - существительное 3 лица ед. числа.

Bought - глагол простого прошедшего времени (past simple)

1. She did not buy a new computer last week.

2. When did she buy a new computer?

3. Where did she buy a new computer last week?

4. Why did she buy a new computer last week?