facilities过去完成时用法小结

2021年1月9日发(作者：余塞)
过去完成时用法小结
过去完成时用法小结

一、过去完成时适用场合
1. 过去完成时表示在过去某一时间或动作以前已经完成了的动作。这个过去的时间常用by，
before等介词短语或一个时间状语从句表示，也可以暗含在上下文中。
I had finished my homework before supper.我在晚饭前就把作业做完了。
The play had already started when we got to the theatre. 我们到剧场时戏已经开始了。
By the end of June they had treated over 10,000 patients. 到六月底他们已经治疗了一万多病
人。
2. 过去完成时还可表示过去某一时刻之前发生的动 作或状态持续到过去某个时间或还要持
续下去，常与for，since等词连用。如：
He had served in the army for ten years before he retired last year. 他在部队干了十年，去年退役
了。
He told me that he had known her since he was a child. 他告诉我他从小就认识她。
He had learned English for eight years before he went to England for further study. 他在去英国
深造前，已学了八年英语。
3. 在一段情景连贯的文字中，先发生的事放在后面叙述时，要用过去完成时。如：
Tom flew home, but his father had already died. 汤姆乘飞机回家，他的父亲却已经去世了。
4. 过去完成时也用于hardly...when...（刚…就…）, no sooner...than... （刚…就…）,
It was the first time + that分句等一些固定句型中。
He had no sooner left the room than they began to talk about him. 他刚离开房间，他们就议论起
他来。
We had hardly begun when we were told to stop.
我们刚开始就被叫停。
It was the first time that he had ever spoken to me in such a tune.他用这样的语调跟我讲话，这是
第一次。
二、过去完成时与一般过去时的比较
1. 当一个由before, after, as soon as 等连词引导的从句所表示的动作和主句的动作紧接着发
生时，两个动作均可用一般过去时来表示。
We had breakfast after we did morning exercises.
做完早操后，我们吃早饭。
The train started to move just before he reached the platform. 他到月台时火车刚开走。
They started ploughing as soon as they got to the fields. 他们一到地里就开始耕地。
2. 按时间顺序叙述两个或两个以上接连发生的动作时，用一般过去时。
He entered the room, turned on the light and sat down at the table. 他走进屋子，打开灯，坐在桌
子旁。
3. 在表示某人过去未曾完成的“心愿”、“打算”、“计划”、“想法”、“许诺”等时，hope, mean,
plan, think, intend等谓语动词常用过去完成时。
I had hoped to be back last night, but I didn’t catch the train. 我本来希望昨晚回来的，但没搭
上火车。
We had thought to return early but they wouldn’t let us go. 我们本想早回来的，但他们不让我
们走。
4. 在表示过去的句子中出现常与完成时 态连用的词，如：already，yet，since，for，ever，
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