概要：根据同学们的学习需求，www.51jxk.com小学频道为同学们整理了一些小学四年级英语语法资料，希望对同学的有所帮助。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notShe 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?

根据同学们的学习需求，www.51jxk.com小学频道为同学们整理了一些小学四年级英语语法资料，希望对同学的有所帮助。

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?