非谓语动词to be done和doneA new library is being built in our school and it'll be accessible to us students when(completed)next year.为什么不用to be completed?时间是next year应该用表将来啊

非谓语动词中 to be done和be done 的区别应该是to be done与非谓语动词done在句中使用的区别。 非谓语动词to have done 和to be done的区别 怎么分辨谓语动词和非谓语动词啊?比如,has caused /to be done /having been done/啊什么的? 非谓语动词动词to be done 和done区别他们都表示已完成,被动 有什么区别 非谓语动词中,to be done和done（done作后置定语）有什么区别.可以举些例子说明一下.3Q 非谓语动词 being done 和 to be done 有什么区别?可以从所用的场合·表达的意义上…………来说. to be doing为什么不能非谓语动词作主语还有to having done 非谓语中to be done =doing?非谓语中to be done =doing?=done 高中英语语法非谓语动词being done和done以及having being done的区别 非谓语动词中什么时候用不定式,什么时候用分词,什么时候用动名词?不是区分to do,to be doing,to have done ,to be done ,to have been done!而是选项中同时出现to be doing和doing或to have done和having done或to have 非谓语动词,doing to do done 的用法区别 非谓语动词,to do doing done的区别 怎么区分谓语动词,to do doing done 和to be doing to be done to have done 和beingdlonehaving done having been done?越具体越好 有分的=3=谢谢你们 非谓语结构有没有TO BE DONE 结构 非谓语动词having been done,to have been done什么时候用?举一些例子. 非谓语动词to have done & having done 有什么区别?三克油 关于英语非谓语问题非谓语doing having done to do to have done to be doing being done have been done to be done to have been doing done doing,having done,to do,to have done ,to be doing,being done,have been done,to be done,to have been doin 非谓语动词doing的被动形式和非谓语动词done的区别