a dog's age; many a long day

1. 我好久沒(méi)有收到約翰的來(lái)信了。
   I have not heard from John for a long time.
2. 我好久沒(méi)有見到查理了。
   I haven't seen Charlie for a dog's age.
3. 我已經(jīng)好久沒(méi)有讀到過(guò)這樣好的書了。
   I've not read such a good book for many a long day.
4. 跟著收音機(jī)的體操音樂(lè)做柔軟體操是好久以前的事情了。
   It's been quite a while since I did callisthenics along with the exercise jingle on the radio.

久的英語(yǔ)翻譯：