be done和have been done,have been to do

be done和have been done,have been to do

has been done是现在完成时，表示事情已经被做完了，例如：The work has just been done .这项工作刚完成；be done仅仅是表示被动状态，没有任何的时态，它是被动语态最基本的结构，be动词可以根据时态变一、指代不同1、have done：表示做了不必做的事。2、have been done：已经完成。二、侧重点不同1、have done：现

1.一般时：be done 一般过去时：was/were done 一般现在时：am/is/are done 一般将来时：will(shall) be done 2.进行时：be being done 将来进行时：will(shall) be being done 3.完成时：1、首先要区分has been done与had been done的区别：have/has been done 是现在完成时的被动语态。表示某事被做，。如：The problems have been solved.这些问

∩﹏∩ 此答案已被选择为最佳答案，但并不代表问吧支持或赞同其观点1、一般式to be done These are the books to be given out to the students. 这些是要发给学生的书。2、完成式to have been done The novel is said to have

∪ω∪ 是的，have been就是be从过去到现在即was were 到am is are，是主动的，若加了done则成为完成一、指代不同1、have done:表示做了不必做的事。2、have been done:已经完成。二、侧重点不同1、have done:现在完成时。2、have been done:是现在完成时的被动

＞﹏＜ 时态表格+谓语和非谓语一般现在do/be 进行完成完成进行havebeendoinghadbeendoing bedoing/behavedone/havebeendonebeingdonedonehaddone/过去did/was,wasdoing/werehadbeenwasbeingdonedonedhave been doing:现在完成进行时，表示已开始，正在进行，还没结束，意思是：一直做这个做到现在；having been done:是它的被动语态，现在完成时，意思是：已经被完成；have to be do