〔11〕未来完了形

〔11〕 未来完了形
(1)By the time we arrive, they will have finished the meeting.
(2)She will have graduated by next spring.
(3)They will have visited at least five countries by the end of this year.
(4)She will have read over 50 books by the time she turns 12.
(5)By the time she retires, she will have taught for 40 years.
(6)They will have been married for 25 years next week.