Future perfect continuous in the past

(Будущее совершенное длительное время в прошедшем)

 Спряжение глагола to write в Future Perfect Continuous in the Past: 

    Утвердительная             Отрицательная                            Вопросительная                       

          форма                               форма                                         форма

      Формы Future Perfect Continuous in the Past образуются аналогично формам Future Perfect Соnti­nuous. Разница состоит лишь в том, что вместо will употребляется would.

 Futurе Perfect Continuous in the Past упот­ребляется по тем же правилам, что и Futurе Perfect Continuous, с той лишь разницей, что Future Perfect Соntinuous in the Past употребляется в придаточных дополнительных предложениях, когда глагол-сказуе­мое в главном предложении стоит в прошедшем вре­мени:

 Не said that the new machine would have bееn working for three hours bу the night shift.

 Он сказал, что новая маши­на уже будет работать три часа к ночной смене.

Времена Future Perfect Continuous и Future Perfect Continuous in the Past употребляются редко. В их значении обычно используются соответствующие формы Future Perfect или Future Simple.

I'd have been writing       I would not have been writing   would I have been writing?

 You'd have been writing  You wouldn't have been writing would you have been writing?

 We'd have been writing   We wouldn't have been writing  would we have been writing?

 They'd have been writing  They wouldn't have been writing would they have been writing?

 He'd have been writing      He would not have been writing  would he have been writing?

 She'd have been writing   She would not have been writing  would she have been writing?

 It'd have been writing       It would not have been writing     would it have been writing?