過去完成時的概念：

過去完成時既可表示過去某個時間或動作之前所發(fā)生的事情，也可表示過去某個時間或動作之前所發(fā)生的動作一直持續(xù)到過去某個時間。過去完成時由“had+過去分詞”構(gòu)成。
如：She had leant 2000 English words by the end of last month.

過去完成時的應(yīng)用：

（1）與過去完成時連用的時間狀語可以多種多樣，使用它的主要依據(jù)是看其是否發(fā)生在“過去的過去”。
如：He had learnt some English before I went here. 在來這兒之前我學(xué)過一些英語。
He had written three stories by last year.到去年他已經(jīng)寫了三篇故事。
We had cleaned the room when he got there. 當(dāng)他到那兒時，我們已經(jīng)把房子弄干凈了。
He went there after he had finished his work. 他把事做完之后，就去哪兒了。
注意：當(dāng)主句跟由before, after, as soon as所引導(dǎo)的時間從句的動作連接很緊密時，從句也可用一般過去時。
如：He went there after he read the letter. 他看了那封信后就去那兒了。
（2）過去完成時還經(jīng)常用于主句為過去時的賓語從句中。
如：He said he had been a soldier. 他說他當(dāng)過兵。
They said they had seen the film. 他們說這幕電影他們看過。
（3）在hardly/scarcely…when…,nosooner…than…兩個結(jié)構(gòu)中的主句通常要用過去完成時。
如：Hardly had I told her the news when she began to cry out. 她一聽到這一消息就大哭了起來。
Scarcely had he finished his supper when he went out. 他已吃完晚飯就出去了。
No sooner had he fallen asleep than he lay down on the bed. 他一躺倒床上就睡著了。
（4）動詞expect, hope, suppose, think, want等的過去完成時可用來表示未實現(xiàn)的計劃、打算或希望。
如：I had hoped to see you. 我本希望來看你。
He had wanted to buy a house in Beijing. 他本想在北京買棟房子。

過去完成時與一般過去時：

（1）過去完成時表示以過去某時間為起點以前所發(fā)生的動作或存在的狀態(tài)，即：過去完成時強調(diào)“過去的過去”，而一般過去時只表示以現(xiàn)在時間為起點以前所發(fā)生的事情或存在的狀態(tài)。
如：He studied there two years ago. 他在那兒學(xué)習(xí)了兩年。(離現(xiàn)在兩年)
He said he had studied there two years ago. 他說他在那兒學(xué)習(xí)了兩年。(離他說話時兩年)
（2）表示過去某個時間以前所連續(xù)發(fā)生的兩個或兩個以上的動作時，一般用and, then, but按照動作的先后順序連接，此時通常用一般過去時而不用過去完成時。
如：He said he went the shop and bought some food. 他說他去商店買了一些食品。
（3）兩個動作相繼發(fā)生，可用一般過去時；如第一個動作需要若干時間完成，用過去完成時。
如：When I heard the news, I was very excited.
（4）敘述歷史事實，可不用過去完成時，而只用一般過去時。
如：Our teacher told us that Columbus discovered America in1492.

相關(guān)高中英語知識點：過去完成時的被動語態(tài)

過去完成時的被動語態(tài)的概念：

過去完成時的被動語態(tài)是過去完成時態(tài)和被動語態(tài)的疊合。表示過去某一時間以前已經(jīng)完成的動作，常與by，before等引導(dǎo)的時間狀語連用。由“had+been+過去分詞”構(gòu)成。

過去完成時態(tài)的被動語態(tài)的構(gòu)成：

1）過去完成時的被動語態(tài)的肯定式為：had + been + done。
如：The task had been finished before 12:00 yesterday.
2）過去完成時的被動語態(tài)的否定式為：have / has + not + been + done。
如：The task hadn't been finished before 12:00 yesterday.
3）過去完成時的被動語態(tài)的一般疑問句需將had提到主語的前面。
如：Had the task been finished before 12:00 yesterday?
4）過去完成時的被動語態(tài)的特殊疑問句為：疑問詞 + had+ been + done。
如：What time had the task been finished yesterday?

過去完成時被動語態(tài)的用法：

過去完成時由“had+過去分詞”構(gòu)成，表示在過去某一時刻或某一動作之前發(fā)生的動作或狀態(tài)，句中常用by，before，until，when等詞引導(dǎo)時間狀語。
如：We had built five new buildings by the end of last year. 過去完成時的被動語態(tài)有以下三種形式：
（1）肯定結(jié)構(gòu)：主語＋had been done＋其他成分
（2）否定結(jié)構(gòu)：主語＋had not been done＋其他成分
（3）疑問句結(jié)構(gòu)：had＋主語＋been done＋其他成分；
疑問詞＋had＋主語＋been done＋其他成分
過去完成時的被動語態(tài)常用于以下情況：
（1）表示過去某一時間以前已經(jīng)完成的動作，常與by, before等引導(dǎo)的時間狀語連用。
如：By the time he got to the school, the first period had been finished.
The classroom hadn't been cleaned before the teacher came.
How many buildings had been destroyed when the hurricane ended?
Had the new plan been discussed before the meeting?
（2）在told, said, knew, heard, thought等動詞之后的賓語從句中，若表示過去某一被動動作時，用過去完成時。
如：The said the production costs had been reduced.
The boy was reminded that his homework had not been handed in.
The media reported more than 1,000 people had been killed in the earthquake.
（3）根據(jù)語意可以判斷出動作先后的被動語態(tài)，用過去完成時。
如：As the assignment had been done, he went on to search the Internet.
He did what he had been told to.
另：當(dāng)從句由after，before，when或assoonas引導(dǎo)時，主句和從句都可以用一般過去時。
如：When he arrived, he called her.
They locked the door before they left.

過去完成時與現(xiàn)在完成時被動語態(tài)用法區(qū)別： 　　

現(xiàn)在完成時被動語態(tài)表示相對于現(xiàn)在來說已被完成的動作，過去完成時被動語態(tài)表示相對于過去某一時刻來說已被完成的動作。 　　
例如：This polluted river has been cleaned. 這條被污染了的河流已被凈化。 　　
析：該句表示到現(xiàn)在為止這條河流已被凈化。 　　
例如：He said this book had been translated into Japanese. 他說這本書已被譯成日語。 　　
析：該句表示到他說話時所體現(xiàn)的時間為止這本書已被譯成日語。

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