返回
教育头条
英语语法解析总结
英语语法
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?
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?
以上内容为教育宝【王敏】编辑整理的内容，我已开通官方个人微信号（18560125702）。选新概念英语课程，不焦虑！就让我来帮助你，就像帮助我自己，如果需要获得帮助，建议您加加我微信，可以十分便捷的和我充分互动交流，我会为您提供答疑指导等一条龙学习服务！
在选课过程中如需帮助，您可以加我微信：18560125702，我将为您提供全面专业的选课帮助，让我们一起开始美好的学习之旅吧。返回教育宝头条
【免责声明】本文仅代表作者本人观点，与教育宝无关。教育宝对文中陈述、观点判断保持中立，不对所包含内容的准确性、可靠性或完整性提供任何保证。请读者仅作参考，特此声明！
