一、选准关联代词和关联副词
　　在定为从句中，问题代词或问题副词都替换为先词在从句中当成有一定的成份，这样该从句中少主语、表语、宾语或定语，就用到问题代词来连入从句；这样从句中少状语，就需用问题副词来连入从句。
　　1. I still remember the days which/that we spent together.
　　2. I still remember the days when we worked together.
　　二、明白仅用that引导系统局限性性定语从句的时候
　　that 在禁止性定语从句既可指人又可指物.在以下实际情况下,智能用that来引导作用定语从句。
　　1. 先于词是all, much, few, little, everything, anything, nothing等飘忽不定代词是，如：Is there anything that you want to buy
　　2. 优先词被all, few, little, much, every, some, no等词掩盖或被the only, the very, the same, the last等一定词掩盖时。如：These are all the pictures that I have seen. This is the very dictionary that is of 指人great help.
　　3. 先行者词既 指人又指物时。如：My father and his teacher talked a lot about the things and the persons that they could remember
　　4. 问题代词在定语从句中作表语时。如：Our school is not the one that it used to be.
　　5. 引领词被描绘词的是最高的级或序数词掩盖时。如：The first English novel that I read was A Tale of Two Cities.
　　6. 主句是who 或which诱导的特殊化问句时。如：Who is the girl that is standing under the true Which is the machine that we used last Sunday
　　三、拿捏“介词＋的关系代词”组成公司词的用
　　介词的选定 与住句中优先词的结合密不可分相关。如：That‘s the reason for which he was late for school. This is the book on which I spent 8 yuan.
　　考虑：定语从句中谓语动名词是有效介词的动名词语句时，介词应放入动名词在此之后，是不能卸开放入关联代词前。如：This is the key which you are looking for.  This is the baby whom you will look after.
　　四、明白as和which修复系统的非约束性定语从句的差异
　　1. 位址上的本质区别 ：as 疏导的非约束性定语从句的位址很智能化，应该放主句前，也应该放主句后，还可插在 放主句在此之后。“周所周知，宇宙环绕着太阳星转”。全句话应该有这几样表述办法（1）As is known to us all, the earth turns around the sun. （2） The earth, as is known to us all, turns around the sun. （3） The earth turns around the sun, as is known to us all. （4） The earth turns around the sun, which our parents once told us when we were very young.
　　2. 词义与保持联系起来上的不同：as指导的非减少性定语从句与主句彼此有都是广泛的前后左右文保持联系起来，as 本质含带“尽管”之意；而which指导的非减少性定语从句与主句彼此在逻辑性效果上相似串联句，which 本质标识“这”或“这点儿”之意。如：Light travels faster than sound, as we all know. Jack came late for school, which made his teacher angry.
　　五、需要注意定语从句的主谓不同性
　　联系代词在定语从句中作主语时，从句的谓语须得与先行先试词控制称为和数的不同。如：Tom is one of the boys who is from the USA
　　六、控制主句的完整的性
　　1. 在应于从句中，没有冒出任何人前提，主句的型式就必须要完好，即主句就必须要有主语和谓语，缺一不能不，反之，一整个主从pp句就没有办法成为。试特别：
　　（1）Is this factory_____ we visited last week
　　（2） Is this the factory _______ we visited last week
　　A. which    B. where     C. what    D. the one
　　辨析：一号道不存在表语，只剩下填D项能够保护主句的详细运输安全，其知他的选择项均为打扰项。第二名题逐句客观实在详细完整详细，应填的的关系代词在从句中作visited的宾语，故应该选择A项。
　　2. 在定语从句中，社会相关代词或社会相关副词都早就 带替为先词自立地或与一定的介词一块儿在定语从句中客串好几回定的物质，因而在定语从句中就是不能再发现于社会相关代（副）词相同的物质。如：Is this the train that they took it last Sunday （错句）浅析：该题中that都早就 带替为先词the train 在定语从句中客串及物形容词took的宾语，故相同发现的宾语it须要删掉。