過去將來完成進行時的結構及用法
過去將來完成進行時表動作從過去某一時間開始一直延續到過去將來某一時間。動作是否繼續下去，由上下文決定。過去完成進行時由“would have been+現在分詞”構成。
二、過去將來完成進行時的構成
過去完成進行時由“would have been+現在分詞”構成。如：
He said that by the end of the spring term he would have been studying English for three years. 他說到了春季學期末，他就學了三年英語了。
I knew by that time he would have been working there for 30 years. 我知道到那時他他就在那兒工作滿30年了。
She told me she’d have been teaching in that university for 20 years by that summer. 她告訴我到年年夏天她在那所大學教書就滿20年了。
三、間接引語與過去將來完成進行時
在間接引語中，若主句爲過去時態，則用於賓語從句中的間接引語則要把將來完成進行時改爲過去將來完成進行時。如：
I know by this time next week you’ll have been working here for 30 years.
→I knew by that time he would have been working there for 30 years.
She will have been teaching in this university for 20 years by this summer.
→She told me she’d have been teaching in that university for 20 years by that summer.
怎麼樣，看完了這篇文章，大家是不是對過去將來完成進行時的用法有了初步的瞭解了呢？喜歡就趕快收藏起來吧~
