Kita menggunakan tenses ini untuk menyatakan tindakan-tindakan yang sedang akan terjadi pada waktu tertentu di masa yang akan datang. Beberapa ekspresi waktu yang umum digunakan dalam Future Perfect Continuous:
- By tomorrow / 8 o’clock
- This year / month / week
- Next year / month / week
- This year / month / week
- Next year / month / week
Bentuk
Subjek + will + have + been + Verb+ing. Contoh:
- We will have been driving 6 hours by the time we get home.
In the summer Mike will have been trying to find a new job for five months. - Jane will be very tired when she comes home, because she will have been flying over 24 hours.
- My father and I will have been breeding sheep for 20 years tomorrow.
- By the year 2020, linguists will have been studying and defining the Indo-European language family for more than 200 years.
Catatan: Jika durasi sebuah aktivitas (sejak April, selama 3 jam) tidak diketahui maka Future Continuous harus digunakan ketimbang bentuk perfect.
Untuk bentuk negatif kita tambahkan not.
- She won’t have been writing the book for four months by the end of October.
Kalimat-kalimat negatif kedengarannya tidak natural. Kemungkinan karena jawaban terhadap sebuah pertanyaan seperti “Will she have been teaching for 30 years this year?” cukup “No, I don’t think so”.
Bentuk negatif memiliki pola sebagai berikut:
Will + subjek + have + been + verb+ing. Contoh:
- Will he have been writing the composition for a month by the end of February?
Pertanyaan-pertanyaan yang dimulai dengan “how long” lebih umum:
- How long will you have been learning German this year?
- How long will you have been trying to get your driving license this week? I hope you’ll finally make it!
