Теория:
Study some information about questions (general and special) in Past Perfect.
Для образования Past Perfect необходимо использовать вспомогательный глагол had и основной глагол в третьей форме (если это неправильный глагол), либо глагол с окончанием -ed (если глагол правильный).
Subject \(+\) had \(+\) V\(3\)/Ved \(+\) other parts of the sentence.
Для построения вопросительных предложений нужно использовать следующий порядок слов.
General question
Had \(+\) subject \(+\) V\(3\)/Ved \(+\) other parts of the sentence?
Had | I written? |
Had | you written? |
Had | he, she, it written? |
Had | we written? |
Had | you written? |
Had | they written? |
Special question
Question word (when, why, how, what...) \(+\) had \(+\) subject \(+\) V\(3\)/Ved \(+\) other parts of the sentence?
Examples
Had you finished the project by \(7\) o'clock yesterday?
Why had you cooked lunch before your mum came home?

Источники:
www.ecoliteracy.org/download/rethinking-school-lunch-guide