Past Future Perfect Continuous Tense

Past Future Perfect Continuous adalah tenses yang menyatakan kejadian yang akan, telah, dan masih sedang terjadi di masa lalu, tetapi tidak ada hubungannya dengan masa sekarang.

Rumus :

• Positive (+) : S + Would + Have + Been + V-ing + Object
• Negative (-) : S + Would + Not + Have + Been + V-ing + Object
• Interrogative (?) : Would + S + Have + Been + V-ing + Object + ?

Contoh : 

• Positive (+) : I would have been writing the article for two days by the end of last week.
• Negative (-) : Diana would not have been shooting the short movie for one week by last month.
• Interrogative (?) : Would he have been visiting his grandmother in Bandung for three days by last week?