regard doing=regard having done=regard to have been done

regard doing=regard having done=regard to have been done in regard to doing? regard with regard to=as regards? have been done和have been doing 和having been done和having done regard to 和regard as的区别. done,tobe done,to have been done,to have done,having done,ha to have been done 和having been done with regard to是什么意思 have been done 与 having been done 与have been doing与having be doing having done being done having been done 造句! 非谓语动词用法to have done/having done/to have been done/having bee