After ( ) for the job,you will be required to take a language test.答案为什么不是interviewed,省略

题目

After ( ) for the job,you will be required to take a language test.答案为什么不是interviewed,省略
在时间或条件状语从句中,当主语一致,谓语是be动词时,不是可以省略吗,那么过去分词interviewed表被动不正好吗,好多答案都是being interviewed,那不是用来表示现在被动进行时吗,我觉得不合适.可以看这道题：New ideas sometimes have to wait for years before fully accepted 还是being fully accepted?我们给的答案是第二个
那我说的new ideas sometimes have to wait for years before fullly accepted 还是being fully accepted 可是我们答案给的这两道题正好反了，为什么这个地方before只能看成是介词呢，

答案

after是一个相当特殊的词 既是连词 也是介词 (before也是同理)
例如：After he was interviewed,he succeeded in being employed.这句是对的.
但是,当把after状语从句的主语he省略掉的时候,after会被自动认为是一个介词,所以after being interviewed,不是表示“在正在被面试”,而是因为after是介词,后接动词ing形式而已.After being interviewed和before being accepted均为正确的表达,是介词后接动词短语的语法点考查.
其他的连词,像when,if,因为它们没有其他词性,所以不会产生像after一样的问题.
例如：When he was interviewed,he appeared calm and confident.可改动成：When interviewed,he appeared calm and confident.
恩 必须是before being fully accepted.before此处只能看成一个介词咯,如果不能明白直接短信我
呃 我看到你逐渐钻到牛角尖里头了
before / after有两个词性,后接从句(有主语)的时候,看成连词,这点相信你能理解.
但问题来了,当它接的是名词或动词(无主语)的时候,它就是个介词了,别把它看成省略主语的省略句,因为after / before本身具备两个词性,所以它无法像when,if一样进行你所熟知的省略