have been done是現(xiàn)在完成時(shí)的被動(dòng)結(jié)構(gòu)。強(qiáng)調(diào)一個(gè)發(fā)生在過去的被動(dòng)性動(dòng)作，它有兩層意思：動(dòng)作已經(jīng)完成，強(qiáng)調(diào)對(duì)現(xiàn)在造成的影響或結(jié)果；主語與謂語動(dòng)詞之間為被動(dòng)關(guān)系。
一、have been done的用法
have been done是現(xiàn)在完成時(shí)的被動(dòng)語態(tài)結(jié)構(gòu)。被動(dòng)語態(tài)完整結(jié)構(gòu)：肯定式為：have/has+been+done。否定式為：have/has+not+been+done。現(xiàn)在完成時(shí)是“過去的動(dòng)作或狀態(tài)持續(xù)到現(xiàn)在并且已經(jīng)完成”。
二、have been done的例句
1. A lot of good deeds have been done by him. 他做了很多好事。
2.These projects have been finished already. 這些項(xiàng)目已經(jīng)完成。
3.The work had not been done very thoroughly.這工作做得不太認(rèn)真。
4.They saw the job had been done.他們看到工作已經(jīng)做了。
5.She knew it would be difficult to undo the damage that had been done.她知道想要消除已經(jīng)造成的損害是很難的。
6.He was angry at finding that nothing had been done. 當(dāng)他知道沒有啥事做出來生起氣來。
