题目内容：

【急】Point out the subject,the object,the predicative and the appositive of the following sentence
That I am a teacher of English is known to you all.
You know that I am a teacher of English.
It is known to you all that I am a teacher of English.
The fact that I am a teacher of English is known to you all.
I am worried about whether you can do well in the exam.
What I am worried about is whether you can do well in the exam.
I don't know the fact that she was caught stealing.

优质解答

(That I am a teacher of English)主语 is(系动词） known （表语）to you all.
You主语 know谓语 that I am a teacher of English宾语从句.
It 形式主语is known系表 to you all that I am a teacher of English（that引导的主语从句）
（The fact that 同位语从句I am a teacher of English）主语 is known系表 to you all.
I主语 am worried about系表 whether you can do well in the exam.(whether引导宾语从句）
（What I am worried about）主语 is系动词 whether you can do well in the exam.（whether引导表语从句）
I主语 don't know谓语 the fact宾语 that she was caught stealing（that引导修饰fact的同位语从句）
不明白的再问哟,请及时采纳,多谢!

追问：

怎么判断同位语呢 好像最后那题怎么知道它是同位语从句？

追答：

从句的内容是它所修饰的词具体解释。