could have done something 与 should have done something有什么区别?

来源：学生作业帮助网编辑：作业帮时间：2024/04/28 14:53:19

could have done something 与 should have done something有什么区别?
could have done something 与 should have done something有什么区别?

could have done something 与 should have done something有什么区别?
could have done something 本可能做某事
例: I could have studied in Fudan University if I had done better in College Entrance Exam. 假如我高考考好一点的话,本来有可能在复旦大学念书的.
should have done something 本应该做某事（该做的没做）
例："You should have handed in your homework this morning." the teacher said angrily. 老师生气地说：“你本应上午交作业的.”

前面一个是：本来可以完成某事
后面一个是：本来应该完成某事

could have done something
本可以做某事（过去）
should have done something
该做某事而未作（也是指过去）

could never have done could not have done Some have done it? Could have done would have done should have done could have been done ,could have could never have done 造句 how could you have done would have done,might have done,could have done,should have done分别表示什么意思? should have done ,shouldn't have done.could have done,couldn't have done could have done和need have could have done和would have done的区别 should have done和could have done的区别? 高中英语中might have done 和could have done 英语：should have done与could have done区别? could have done 和 might have done 的区别 I could have done without 怎么翻译? 求could 、should have done的用法. should have done ;could have done; might have done 有什么区别