be needed to do与need to be done

问题描述:

be needed to do与need to be done
有什么区别,混分的别来,
难道仅仅是 被需要做 与 需要被做 那么简单吗!
我很郁闷呐

be needed to do=be needed in order to do这个不定式是目的状语如:A lot of time is needed to do this work.(为了)做这项工作,需要很多时间.=A lot of time is needed in order to do this work.need to be done...