第1篇 小学英语语法总结：过去完成时
1 、过去完成时是一个相对时态，表示过去的过去，只有在两个过去发生的动作相比较时才可显示出来。
e.g. as soon as we got to the station, the train had left.
注：主从句表达的动作紧接时，即两动作发生的时间没有明显时间上的悬殊或空档时，主从句都可用一般过去时。
e.g. where did your brother study before he joined the army?
2 、过去完成时可表示截止过去某一时间动作的总或动作的结束。
e.g. by the end of last month. we had reviewed four books
by eight o`clock, he had finished his homework.
与这个时态连用的时间状语常有：
by 1985, by eight o`clock, by then, by the end of last month, by the time when, when, as soon as, before 等连词引导的时间状语从句，表示主句动作结束的时间。
第2篇 新概念英语（一）语法总结：过去完成时
导语新概念英语作为家喻户晓的英文学习教材，《新概念英语》在中国经久不衰，影响了好几代学习者。即使以今天的角度来看，这套出版于几十年前的教材无论是在编排体系，题材和题材，词汇还是语法上都有出彩之处，值得各个层次的人学习。
过去完成时
用法：在过去的时间里，两个动作中，发生在前的哪个动作要用过去完成时。
结构：had+过去分词
after she had finished her homework, she went shopping.
they had sold the car before i asked the price.
the train had left before i arrived at the station.
after/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。
★ 变疑问句将助动词移到句首
had she finished her homework?
★ 变否定句在助动词后面加not
she hadn't finished her homework.
★ 肯定回答及否定回答
yes, she had. / no, she hadn't.
★ 特殊疑问句
what had she done?
第3篇 新概念英语语法总结：过去完成时
过去完成时
用法：在过去的时间里，两个动作中，发生在前的哪个动作要用过去完成时。
结构：had+过去分词
after she had finished her homework, she went shopping.
they had sold the car before i asked the price.
the train had left before i arrived at the station.
after/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。
★ 变疑问句将助动词移到句首
had she finished her homework?
★ 变否定句在助动词后面加not
she hadn't finished her homework.
★ 肯定回答及否定回答
yes, she had. / no, she hadn't.
★ 特殊疑问句
what had she done?
第4篇 小学五年级英语语法总结：过去完成时
用法：在过去的时间里，两个动作中，发生在前的那个动作要用过去完成时。
结构：had+过去分词
after she had finished her homework, she went shopping.
they had sold the car before i asked the price.
the train had left before i arrived at the station.
after/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。
1.变疑问句将助动词移到句首
had she finished her homework?
2. 变否定句在助动词后面加not
she hadn’t finished her homework.
3. 肯定回答及否定回答
yes, she had. no, she hadn’t.
4.特殊疑问句：
what had she done?
第5篇 新概念英语第一册语法总结：过去完成时
过去完成时
用法：在过去的时间里，两个动作中，发生在前的哪个动作要用过去完成时。
结构：had+过去分词
after she had finished her homework, she went shopping.
they had sold the car before i asked the price.
the train had left before i arrived at the station.
after/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。
★ 变疑问句将助动词移到句首
had she finished her homework?
★ 变否定句在助动词后面加not
she hadn't finished her homework.
★ 肯定回答及否定回答
yes, she had. / no, she hadn't.
★ 特殊疑问句
what had she done?
