阿摩線上測驗
20. The old tenants ______ the property by the time we arrived. There was no furniture left inside.
(A) had vacated
(B) have vacated
(C) had been vacating
(D) vacated
答案：登入後查看
統計： A(268), B(33), C(36), D(5), E(0) #1613396
統計： A(268), B(33), C(36), D(5), E(0) #1613396
詳解 (共 1 筆)
Kurt Vo
#3510673
過去完成式=had+過去分詞
The old tenants had vacated the property by the time we arrived. There was no furniture left inside.
過去完成式表示過去某一時間或某一動作之前已經完成的動作或經驗。過去完成式通常用於描述過去發生的兩個事件，先發生的事件用過去完成式，後發生的事件用過去簡單式來表達。
ex. The plane had already taken off when I arrived at the airport.
當我到達機場時，這架飛機已經起飛了。
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