英语语法
过去完成时（Past Perfect）
用来说明一个过去的动作发生在另一个过去动作之前。“She had already left when I arrived.”讲故事、讲道理时想把先后顺序说清楚，少不了它。
Subject + had + past participle
母语者的真实例句
"She had spent approximately $15 making this school project and five hours, doing the school project, and she had to redo it because of the actions of, miss Keyola."
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怎么用
公式
Subject + had + past participle
这一页把课本规则和真实英语放在一起：每个例子都是真人母语者的无脚本片段。你听到的是这个语法点在真实生活里怎么说，不是在课堂上怎么说。