定语从句引导词只用that不用which定语从句中,先行词为物：当先行词在主句中作表语时,引导词只用that不用which当先行词在主句中作表语且引导词在从句中作表语时,引导词只用that不用which当先

定语从句引导词只用that不用which定语从句中,先行词为物：当先行词在主句中作表语时,引导词只用that不用which当先行词在主句中作表语且引导词在从句中作表语时,引导词只用that不用which当先
定语从句引导词只用that不用which
定语从句中,先行词为物：
当先行词在主句中作表语时,引导词只用that不用which
当先行词在主句中作表语且引导词在从句中作表语时,引导词只用that不用which
当先行词在主句中作表语或引导词在从句中作表语时,引导词只用that不用which
哪个对?

定语从句引导词只用that不用which定语从句中,先行词为物：当先行词在主句中作表语时,引导词只用that不用which当先行词在主句中作表语且引导词在从句中作表语时,引导词只用that不用which当先
楼主的问题很专业,其实关于which到底能不能做表语,很多权威语法书都有争议.目前为止,是第三种说法正确.当先行词在主句中做表语,或者,引导词在从句中作表语,符合任一种情况都只能用that.Shenzhen is no longer the city that it used to be .属于引导词在从句中作表语.This isn't the book that I borrowed from the library.属于先行词在主句中作表语.
有争议说which可作表语,但也只有这样的例子,She was fond of dancing,which her brother never was.只能说明是在非限制性定语从句中,which 可作表语.

都不对，你说的这三种情况，都可以用 which。

当先行词在主句中作表语且引导词在从句中作表语时，引导词只用that不用which
此答案是正确的

只用that 的情况
1，先行词是不定代词，all, much ，little，something (包括所有的 -thing)，none, the one时
如：you should ejaculate out all that you have.
2,先行词前面有修饰 the only, the very, any ,few, no, all.
...

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只用that 的情况
1，先行词是不定代词，all, much ，little，something (包括所有的 -thing)，none, the one时
如：you should ejaculate out all that you have.
2,先行词前面有修饰 the only, the very, any ,few, no, all.
如：the only thing that i can do now is to fuck you all.
3,有最高级修饰。
如：this is the most fuccking film that i have ever seen.
4,主句的主语是疑问词who或者which
如：who is the girl that played am important role in this popular AV.
5,先行词有序数词修饰
如：who is the first AV actress that you know?
6,句子中有多个定语从句，从第二个开始必须用that
如：that is the film company ,which produced AV that played by famous actresses such as Maria Ozawa .
7,先行词在主句中做表语，关系代词也做表语的时候。
如：Rola Takizawa is no longer the lovely girl that she used to be

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最后一句后半部分对

因为that在从句中做主宾表都行，指物指人都行
which做主宾，指物。（注意只在从句中讨论他们的成分）

其实更多的是这样的用法只用that:(先行词的角度)
先行词是不定代词。
先行词前有最高级
先行词前有限定词修饰...

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最后一句后半部分对

因为that在从句中做主宾表都行，指物指人都行
which做主宾，指物。（注意只在从句中讨论他们的成分）

其实更多的是这样的用法只用that:(先行词的角度)
先行词是不定代词。
先行词前有最高级
先行词前有限定词修饰

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①当先行词是all,everything,nothing,something,anything,little,much等不定代词时 或被all, every,no,some,any,little,much,few,only等修饰时；
②先行词被序数词或最高级修饰时；
③先行词被the only,the very等修饰时；
④当并列的两个先行词分别表示人或物，关系代词用th...

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①当先行词是all,everything,nothing,something,anything,little,much等不定代词时 或被all, every,no,some,any,little,much,few,only等修饰时；
②先行词被序数词或最高级修饰时；
③先行词被the only,the very等修饰时；
④当并列的两个先行词分别表示人或物，关系代词用that;
⑤先行词是who或who引导的从句；
⑥当先行词在定语从句中做be的表语时；
⑦当主句是which引导的特殊疑问句时，关系代词用that.

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