神马作文网过去完成时的定义结构时间状语等
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/09/29 13:27:47
过去完成时的定义结构时间状语等
1）过去完成时的定义:动词的一种时态形式,表示到过去某一时间已经完成的行为或动作.
2）结构：had + 动词的过去分词
3）时间状语：by...; for...; since...等等.
4）例句：
He had finished his homework by 9 o'clock last night.
He had waited there for three hours by that time.
He had always stayed in his office ever since that morning.
再问： 请写详细点 谢谢
再答： 没法再详细了！ 你还是耐心、仔细、认真地读一遍吧！
2）结构：had + 动词的过去分词
3）时间状语：by...; for...; since...等等.
4）例句：
He had finished his homework by 9 o'clock last night.
He had waited there for three hours by that time.
He had always stayed in his office ever since that morning.
再问： 请写详细点 谢谢
再答： 没法再详细了！ 你还是耐心、仔细、认真地读一遍吧！