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定语从句总结一：定语后置的总结〔1〕介词短语作定语：the landlady in the bad situation/ the way in error/ thethiefwith a gun / the communication in English /The student in sorrow didn’t pass the English exam.〔2〕表语形容词作定语：the presidents alive in the U.S.A are all male.〔3〕不定合成代词被修饰：Although I had dinner tonight, I still need something delicious tohave.〔4〕副词作定语：the students here are all come from Shenyang.〔5〕不定式作后置定语：the destination to go / the cookbook to use / the movie to cast/ the match to fire / the classical music to listen / the hammerto use / the task to finish〔6〕现在分词作定语：the man pronouncing the wrong pronunciation is a principal. 〔7〕过去分词作后置定语：the service given in the hotel is 5-star. / the signal signed bythe students are for cheating in the final exam.(P10-1) English is a language spoken all around the world.(P10) In only fifty years, English has developed into thelanguage most widely spoken and used in the world.〔8〕定语从句：〔P4〕The lesson (that) we can learn from Chuck and all others who haveunusual friends is that friends are teachers.二：定语从句的概念和公式特点(P3-1):关系代词在从句中作主语Chuck is a businessmanwho is always so busy that he has little time for his friends.先行词〔被修饰的名词或代词〕+ 关系词〔起连接作用的代词和副词〕+〔,〕定语从句〔在句中作成分〕三：定语从句的分类When I took the money from her grandfather, I looked back at the girl, who was giving me the prettiest, largest smile (that)I have ever seen.限定性定语从句和非限定性定语从句的区别1：限定性没有逗号，非有逗号。
高考英语定语从句用法及注意事项一、关系代词引导的定语从句1、that指人或物在从句中作主语，宾语或表语which指物在从句中作主语，宾语或表语（作宾语时可以省略）who指人在从句中作主语，宾语或表语whom指人在从句中作宾语whose指人或物在从句中作定语as指人或物在从句中作主语，宾语或表语but指人或物在从句中作主语，宾语或表语注意：指物时，whose+名词=the+名词+ofwhich或ofwhich+the+名词2、as的用法（1）常用于下列结构：such…as;so…as;thesame…as;as…as注意：thesame…as表示同一类，不同一个thesame…that表示同一个（2）as与which的区别a、位置不同as可放在主句后，主句前或主句中间；which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用andthis来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：asweknow/asisknowntoall,asweallcansee,ashasbeensaidbefore/above, asmightbeexcepted,asisoftenthecase,一般不能用which代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
二、只用that不用which的情况1、先行词为all,much,everything,nothing,something,anything,nothing,none,theo ne等不定代词时。
2、先行词被only,any,few,little,no,all,just,very,right等修饰时。
3、当先行词是最高级或被形容词最高级修饰时。
4、当先行词是序数词或被序数词修饰时。
5、当先行词是数词时。
干货高中英语语法归纳总结大全，高考必备1.定语从句引导定语从句的关系代词有that,which,who（宾格whom），所有格whose）和关系副词where when why 等，关系代词或关系副词在定语从句中充当一个成分，关系代词that，which,who,whom等在从句中分别作主语或宾语，whose 在从句中作定语，而关系副词when,where,why等在从句中作状语。
如：①I will never forget the days when/in which we worked together.②I will never forget the days which/that we spent together.解析：在句①中，表示时间的名词the days在从句中充当的是状语，所以用关系副词when来代指，引导定语从句修饰先行词the days；而在句②中，表示时间的名词the days在从句中充当的是动词spent的宾语，所以用关系代词that或which来代指。
同样，表示地点或原因的名词如果在从句中作状语，则用关系副词where 或why 来代指；如果在从句中作动词的宾语，则用which或that来代替。
如：①This is the factory where/in which I worked.（作状语）②This is the factory that/which I visited years ago.（作宾语）注：当先行词为time,reason, place时，引导词可以省略。
①This was the first (when/what) I had serious trouble with my boss.②That is the reason (why) I did it.③This is the place (where) we met yesterday.另外，定语从句中谓语动词的数应与先行词的数相一致。
高考英语语法知识点专题复习—定语从句定语从句---基础篇一、定语从句（一）：1. 定语从句的概念：在复合句中，修饰某一名词或代词的从句叫定语从句。
2. 先行词：被定语从句修饰的名词或代词叫先行词。
3. 关系词：引导定语从句的连词叫关系词。
如that、which、who、whom、whose、as、where、when、why等。
4.由that、which、who、whom、whose引导的定语从句。
二、定语从句（二）：1. 先行词是物时，一般情况既可用that也可用which. 但下列情况下，只能用that 不用which。
1). 当先行词为指物的不定代词，如all、everything、something、anything、nothing、none、the one等时，只能用that。
There is nothing ______ I can do for you.2). 当先行词被the only、the very、the last、all、no、little等词修饰时，只能用that。
This is the very book ______ I’m looking for.3). 先行词被序数词修饰时，只能用that。
This is the first textbook ______ I studied in the middle school.4). 先行词为最高级或被最高级修饰时，只能用that。
This is the most beautiful mountain ______ I have ever seen.=I have _____ seen _____ a beautiful mountian.5). 先行词既有人也有物时，只能that。
He told us many interesting things and persons _______ we had.2. 先行词是物时，一般情况既可用that也可用which. 但下列情况下，只能用which不用that。
