The meeting is to be put off till Friday.在这句被动语态中,is后边为什么要 + " to "

题目

The meeting is to be put off till Friday.在这句被动语态中,is后边为什么要 + " to "

答案

be to do 表示预计/计划做某事
本句话意思是本次会议计划延迟到周五召开.