過去完成式 (had + p.p.)
在過去某個時間或某個動作發(fā)生之前的動作
Tina had already left when I got there.
當我到的時候Tina已經(jīng)離開了。
Tina had gone home before I arrived there.
Tina在我到達之前就已經(jīng)回家了。
The train had left before I got to the station.
我到火車站時那班火車已經(jīng)離站了。
He had studied French for two years before he went to France.
他去法國前已學了兩年的法文了。
I didn't go to see the movie "The Sound of Music" with my daughter yesterday because I had already seen the film twice.
昨天我沒跟女兒去看電影《真善美》,因為我已經(jīng)看過兩遍了。