i have been done和i am done有什么区别?

i have been done和i am done有什么区别? i have been here for a long time这句话对吗?i've been here for a long time 如果是错的麻烦说明大家说明下好吗?我一直在困扰haven been和have been done I think I have tried my best.All that can be done ___.A.has done B.has been done C.had done D.had been done为什么选B不选D have done and have been done201.--Good morning .Can I help you --I'd like to have this package___D___,madam.A.be weighed B.to be weighed C.to weigh D.weighed为什么不是被动呢?have been done和 have done什么区别？ i have been to和i have been doing 和i have been.区别i have been to和i have been doing 和i have been+done内些的区别~解释清楚点,内些死定义不太明白譬如说 我已经读过这本书我曾经买过一辆车都怎么说， MUST have been donemust have been doing must have been +名词must have done以上的区别还有是否有must have been done 的用法 和区别EG1 I must have been sleeping 2 your dress must have been expensive.3 I didn't hear the phone,I must have I have been a person . i have been a perfect ass 如果是 have i been a perfect ass 这个 i 和 have I think have tried my best.All that can be done ___ .A.has done B.has been done C.had done D.had been done为什么选B I have done so. have been done 和 to be done I have done和I am done有什么不同?都是done There___so much work thant I have ___ now!A is,to do B am,do C are,done D have,been done i think he must have been a mechanic,中的must和have been是什么词啊? My work ___,I went home.A.had been done B.done C.having done D.to be done I have been doing sth.和I have done sth.有何区别?麻烦各位帮我解决一下英语问题,谢谢! being done,have been done和having done怎么分辨 there___so much work that I have got ___ A is ,to do B am,do C are,done D been,done