定语从句中关系词只用that
that作代词与定语区别？
that作代词与定语区别？
名词性从句中,that只起引导词的作用,本身无词义,无句子成分.
eg:That he came late again made his teacher angry .(这句是that无词义也无句子成分,只起引导词的作用)
但在定语从句中that是一个关系代词,可代替先行词,在从句中作主语,宾语,表语.作宾语时可以省略.它的词义就是先行词的词义.
eg:The book (that) my brother bought yesterday is very interesting.这句中that 代替先行词book在从句中作宾语,要省略.
定语从句中用that的特殊情况？
当不定代词作先行词、序数词修饰先行词、形容词最高级修饰先行词、the only，the last，the very修饰先行词、疑问代词who，which等出现在先行词前面的时候，定语从句的关系词只能使用that.
在定语从句中，有逗号，逗号后面需要填入一个关系词，请问是否在任何情况下都使用which?或者其他？
定从中有逗号隔开的是非限定性定语从句，关系词绝对不能用that，但也不是只能用which，要看前面名词是什么了，比如是人，就可能用who
that在定语从句中做什么成分？
that 引导定语从句时，叫关系代词，代替先行词，所以原来的先行词在小句子中做什么成分that就在定语从句中做什么成分。如： Look at the man 。 The man is standing by the window.合成定语从句后是：look at the man that is standing by the window. 原句中，the man 做主语，则复合句中，that 代替了the man ,做定语从句的主语。
定语从句中Whom和that用法有什么区别？
whom可以引导非限制性定语人名，that不可以。
Peter, whom you met in London, is nowback in Paris. 彼得现在回巴黎了，你在伦敦见过他。
that引导的定语从句先行词可指物，that可在定语从句中作主语，这二项whom均不可以。
The book I got a lot of useful information from was written by a famous scientist.
The man that wrote this book is a famous scientist.
关系代词前有介词时，可以用whom，不可以用that。
Whois the boy with whom you were talking a moment ago