has 表示现在完成时,就是每一个学生已经被告知了；而was没有"已经"的意思
谢谢,望采纳可是被告知了要用被动语态，BE动词+过去分词啊。为什么没有体现出来？？？应该填 has been 绝对没错的，非常基本的现在完成时用法 已经被告知了
-----Have all the students known that our class will visit the factory this afternoon?
-----Have all the students known that our class will visit the factory this afternoon?
-----yes,every student ______told about it.
老师说要填“has”,想知道这个空为什么要填“has”,为什么不能填“was”
-----yes,every student ______told about it.
老师说要填“has”,想知道这个空为什么要填“has”,为什么不能填“was”
其他人气：793 ℃时间：2019-08-21 12:44:11
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