the teacher went into the classroom,()by a few of his students所有带by的都要用被动语态吗,被动语态不是be done吗?那这里怎么没有be呢?为什么不能用having followed,求讲解.good后面一般加动词的什么形式,

分类: 作业答案 • 2022-05-15 21:09:15

问题描述：

the teacher went into the classroom,()by a few of his students
所有带by的都要用被动语态吗,被动语态不是be done吗?那这里怎么没有be呢?为什么不能用having followed,求讲解.good后面一般加动词的什么形式,

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