有无 is/was/be to be done的形式呢?

到底有无with to be done的用法. 有无with something to be done结构? what is to be done? what was to be done?怎么翻译 to be done to have been done to have been doing 形式的造句, to be done的用法 being done 和 be doing ;done ；doing ; be done ;to be done 的用法 Do you have something to be typed?为什么要用to be done的形式? To be done being done have done/to be done TO BE DONE怎么样 what to be done