(There existed) a certain doubt among the students as to the necessity of the work.
There existed a certain doubt
和
There was a certain doubt
有相同意思.
It existed a certain doubt 语法不对.
There existed 是固定搭配.
另外句子多了一个单词:among 后面不可有 to .
(There existed) a certain doubt among the students as to the necessity of the work.
There existed a certain doubt
和
There was a certain doubt
有相同意思.
It existed a certain doubt 语法不对.
There existed 是固定搭配.
另外句子多了一个单词:among 后面不可有 to .