改错题：The artical in the newspaper revealed that the official arrested by the police was.为什么把that变成who.

改错题：The artical in the newspaper revealed that the official arrested by the police was.为什么把that变成who.
改错题：The artical in the newspaper revealed that the official arrested by the police was.
为什么把that变成who.

改错题：The artical in the newspaper revealed that the official arrested by the police was.为什么把that变成who.
that the official arrested by the police was这一部分是做动词revealed的宾语,也就是做宾语从句
that在宾语从句中既不做成分也没有词义,因此造成了宾语从句部分缺少表语（was是系词）
所以,只有把that改成是who,才能构成意义完整、结构完整的句子.

是宾语从句的成分格式

WHO用来修饰the official arrested

The artical in the newspaper revealed who the official arrested by the police was.
报纸上的文章显示，这就是被警方逮捕了的那个人。
who代指被捕的那个人。为什么用that不行。答案是把that变成who.前半句不用管， 看后半句：that the official arrested by the ...

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The artical in the newspaper revealed who the official arrested by the police was.
报纸上的文章显示，这就是被警方逮捕了的那个人。
who代指被捕的那个人。

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不用改成who
用that就是对的

who，that在很多情况下可以通用，但是有些情况只能用who:
1. 先行词是one, ones, anyone的时候宜用who.
One who has nothing to fear for oneself dares to tell the truth.
The ones who flatter me don’t please me.
Don’t t...

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who，that在很多情况下可以通用，但是有些情况只能用who:
1. 先行词是one, ones, anyone的时候宜用who.
One who has nothing to fear for oneself dares to tell the truth.
The ones who flatter me don’t please me.
Don’t tell anyone about the news who oughtn’t to know it.
Anyone who fails to finish the task given should be criticized.
2. 先行词为those的时候，宜用who为关系代词
Those who were not fit for their work could not see the beautiful clothes
made of the magic cloth.
Those who want to go to the Great Wall sign up here.
3. 当先行词有比较长的后置定语的时候
I met a foreigner in the street yesterday who could asked me questions in
Chinese.
4. 一个句子中带有两个定语从句，其中一个定语从句的关系代词为that,另一个则用
who.
The boy that you met last night is the group leader who studies very hard.
5. 在there be 开头的句子中
There is an old man who wants to see you.
There are many young men who are against him.

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The artical in the newspaper revealed who/whom the official arrested by the police was.
报纸上的文章透露了被警方逮捕的官员是谁。
who在此是引导一个宾语从句，作从句中was的表语，指人，所以只能用who或whom。

报纸上面显示的那个被警察逮捕的官员是谁

该句有两种改法：
1. 该句不完整缺少表语，要保留that应把that看成宾语从句，并在最后加个名词句子才完整，比如The artical in the newspaper revealed that the official arrested by the police was John Smith.（这篇文章揭示了警方逮捕的官员是约翰 史密斯）
2. 如你所说把that变成wh...

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该句有两种改法：
1. 该句不完整缺少表语，要保留that应把that看成宾语从句，并在最后加个名词句子才完整，比如The artical in the newspaper revealed that the official arrested by the police was John Smith.（这篇文章揭示了警方逮捕的官员是约翰 史密斯）
2. 如你所说把that变成who也行，who引导名词性的从句充当reveald的宾语，句子就完整了，于是就变成The artical in the newspaper revealed who the official arrested by the police was.（这篇文章揭示了被警方逮捕的官员是的身份/被警方逮捕的官员是谁）。
两种改法都对。

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