1、Unit 4 Friends forever由关系代词引导的定语从句学习目标：1、了解定语从句结构，意义2、能够区分关系代词的几种不同用法Part I 定语从句(1)由关系代词引导的定语从句.Its a person that seeing patients in the Peoples hospital.Its an invention which is used for keeping off the rain.Its an animal which has a long nose.Its something that you drink when you are thirsty.1、定语
2、从句的概念概念:在复合句中修饰名词或代词的句子叫作定语从句。定语：修饰，限定名词或代词的成分，翻译为“的”常见作定语的词：名词，代词，形容词，数词，介词短语等。eg.Mary is a beautiful gir.（形容词作定语）Mary is a girl with long hair.（介词短语做后置定语）Mary is a girl who has long hair.（句子作定语,修饰girl,叫做定语从句）2、定语从句的结构Mary is a girl who has long hair.先行词关系词定语从句关系代词关系副词hat,who,whom,whose,which where
3、,when,why从句的谓语和先行词保持一致被从句修饰的名词或代词-关系词作用：引导定语从句，代替先行词在定语从句中充当主语，宾语，定语等成分，作宾语时常被省略。3、关系代词的用法1）当先行词是物时,用which/whose/that引导.eg.These are the trees that/which were planted last year.Please pass me the book whose coveris green.2）当先行词是人时,用who/whom/whose/that引导.eg.The man who/whom/that I visited yesterday i
4、s my uncle.Tom is the boy whose English is the best in our class.3、只用that的情况1)当先行词被序数词或形容词最高级修饰时。eg.Tom is the cleverest boy that I have ever known.2)当先行词是指物的不定代词时，如：all，anything，something，nothing，none，the one，everything，little，few，much，any eg.Here is something(that)I will tell you.3、只用that的情况3)先行词被
5、the only，the very，the last等修饰时。eg.This is the only novel that you want to borrow4)先行词是或被all，no，some，any，little，much等修饰时。eg.Ive written down all the things that the teacher doesnt allow us to do3、只用that的情况5）先行词既有人又有物时,用that,既不用which,也不用who。eg.He told us many interesting things and persons that we had
6、 never heard6）主句的主语是疑问词who/which时,为了避免重复，只用that。eg.Who is the girl that is crying？eg.Which is the bike that you lost?4、只用which的情况1)介词前置时，不用that，即介词提在定语从句前。eg.This is the room in which he lives.2)非限制性定语从句只用which。eg.The necklace,which you gave me as a present,was lost yesterday.3)先行词为that时，避免重复，用which
7、。eg.Whats that which is under the desk?5、Summary 从句中的成分指代人指代物主语who/thatwhich/that宾语who/whom/that/省略which/that/省略定语whosewhose如何确定合适的关系代词？1）确定先行词2）确定从句位置：位于先行词之后3）确定关系代词：根据先行词在从句中的成分Practice1.The girl _(whom,which)you talked to is Mary.2They were talking about the persons and things _(that,which)they
8、saw in the factory.3Have you found the book _ you lost yesterday?Yes.I left it in the library.A.that B.who C.where D.when4.I still remember the school and the teachers _ I visited in Panzhihua years ago.A.which B.that C.who D.whom5My sister sent me a novel _ is written by Guo Jingming on my 15th birthday.A.who B.which C.what D.when Class is over！Please finish your homework carefully.
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