©无忧考网小开云kaiyun(中国)生频道为网友整理的《小开云kaiyun(中国)五年级英语语法：过去完成时》，供大家参考开云kaiyun(中国)习。 相关年级最新信息：小开云kaiyun(中国)英语 小开云kaiyun(中国)奥数 一年级 二年级 三年级 四年级 五年级 六年级
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?
