未来完成进行时（Future Perfect Progressive）是一种用来表示在将来某个特定时间之前，一个动作将会持续进行一段时间的英语时态。例如，对于句子”I will have been studying for five hours by the time he arrives,”我们可以看出动作“studying”将从现在开始，在“he arrives”之前持续五个小时。
在这个练习中，我们将专注于使用未来完成进行时来填空。通过这些练习，学生不仅可以加深对该时态结构的理解，也能够学会如何在实际语境中恰当使用它。练习的目的是强化学生的语法技能，帮助他们更自然地运用未来完成进行时表达持续发生的未来动作。
练习一：填空题 — 未来完成进行时
By next Thursday, I *will have been working* (work) here for four years.
By the time you return, she *will have been studying* (study) for her exam for three weeks.
They *will have been living* (live) in that house for a decade by 2030.
In two days’ time, we *will have been driving* (drive) all night to reach our destination.
By the end of this month, he *will have been practicing* (practice) the piano every day for five years.
She *will have been teaching* (teach) at the university for six months by the end of this semester.
It *will have been snowing* (snow) for hours by the time the storm stops.
Tom *will have been waiting* (wait) for the interview results for over two weeks by the time they call him.
We *will have been using* (use) renewable energy sources for a year by the next Earth Day.
I *will have been learning* (learn) English for three years by next summer.
They *will have been running* (run) their business for ten years by the time the market stabilizes.
By 8 AM tomorrow, the players *will have been preparing* (prepare) for the match for over six hours.
He *will have been writing* (write) his novel for months by the time he finishes the first draft.
By the time she retires, she *will have been contributing* (contribute) to the company for over 40 years.
We *will have been discussing* (discuss) the project for several hours by the time the meeting ends.
练习二：填空题 — 未来完成进行时的高级应用
By the time the conference begins, they *will have been developing* (develop) the software for two years.
I’m worried that by the time we get to the cinema, the film *will have been showing* (show) for at least 15 minutes.
By 2025, she *will have been teaching* (teach) these students for eight years.
They *will have been renovating* (renovate) their house for almost a year by the time it’s finished.
We *will have been expecting* (expect) his call for several days by tomorrow evening.
The kids *will have been looking* (look) forward to the trip for weeks by the time we leave.
By next week, I *will have been working* (work) on this project for over three months without a break.
She *will have been volunteering* (volunteer) at the shelter every weekend for five years by next month.
He *will have been saving* (save) money for his dream car for two years by the end of this year.
They *will have been sailing* (sail) around the world for 200 days by the time they dock at the next port.
By the time we see each other again, we *will have been communicating* (communicate) mostly through emails for a year.
On her next birthday, she *will have been training* (train) with her team for over a decade.
I predict that by the time the new regulations come into effect, businesses *will have been adjusting* (adjust) to the changes for several months.
If the traffic is bad, by the time you arrive at the party, everyone else *will have been enjoying* (enjoy) themselves for hours.
Assuming we don’t hit any delays, we *will have been traveling* (travel) for exactly 24 hours by the time we reach our hotel.
