关于havebeen我快疯拉⒈havebeen后面为什么有时+ving有时加+v?⒉什么时候完成时+been什么时候不加?⒊请多列些句子（简单,明了的）⒋关于时态的用法

Question

关于 have been 我快疯 拉
⒈ have been 后面为什么有时+ving有时加+v?
⒉ 什么时候完成时+been什么时候不加?
⒊ 请多列些句子（简单,明了的）
⒋ 关于时态的用法

Answer 1

1.have been done现在完成时的被动形式,表示已经被完成
have been doing现在完成进行时,表示到现在为止仍然在进行.
The work has been done.工作已经被完成了.强调结果
They have been playing football for 3 hours.他们已经踢了3小时的足球了.可能还未结束.
2.强调结果直接用have done现在完成时,
强调过程或还未完成的动作行为用have been doing现在完成进行时.
They have finished the work.
They have been doing the work for a whole day.
I have read the book.
I have been reading the book for a week.