(1) since句型：主句用完成時
例：My aunt has worked in a clinic since 1949.
從1949年，我嬸嬸就一直在一家診所工作。
(2) since when +完成時
例：Since when have you planted so many young trees?
從什麼時候你種植了這麼多小樹的?
(3) This/it is the first (third...) time sb have done sth
例：This is the first time I have been here.這是我第一次到這兒。
(4) by…(到……為止)到過去某個時候為止用過去完成時，到現在為止
用現在完成時，到將來某個時候為止用將來完成時。
例：She will have finished the book by my next birthday.
到我下一個生日為止，我將完成那本書。
By eleven o'clock yesterday, we had arrived at the airport.
到昨天十一點止我們就已經到達機場了。
但比較：By the time the speaker entered the hall, all the listeners were seated.
就在主講者進入大廳的時候，所有的聽眾都坐好了。
(5) in the past time( two days/years...) +完成時
例：In the past 10 years, there have been great changes in our family life.
在過去的十年裡，我們的家庭生活發生了很大的變化。
(6) hardly ... when....(no sooner ... than)句型用過去完成時
例：Hardly had I reached the school when the bell rang.
我一到學校，鈴子就響了。
No sooner had we sat down at the table than the phone rang.
我們剛坐到桌子旁邊電話就響了。
(7) 未實現的願望打算等等用過去完成時
例：I had thought I could pass the final examination but I failed.
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