Let's Speak English

- By tomorrow / 8 o’clock
- 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!

Rujukan:
http://www.englishtenseswithcartoons.com/page/tenses/future_perfect_cont

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