Unit9语法 定语从句讲义 2025-2026学年人教版（2012）九年级英语全册

初中英语九上Unit9语法---定语从句精讲精练 一、什么是定语？ The girl in the room后置定语 is my sister. 一个介词词组修饰girl She is an outstanding定语 girl. 一个形容词修饰girl 二、什么是定语从句？ That is an outstanding girl [who is my sister].一个句子修饰girl The girl [who is an outstanding] is my sister. 一个句子修饰girl 三、定语从句的概念 是由关系代词或关系副词引导的从句，其作用是作定语修饰主句的某个名词性成分，一般紧跟在它所修饰的先行词的后面。（与例句颜色对应名称） 四、本课重点讲关系代词(that/which）（who/whom）的用法： 1.that既可代表事物也可代表人，which代表事物；它们在从句中作主语或宾语，that在从句中作宾语时常可省略，which在从句中作宾语时也可省略； 2.which作宾语时，根据先行词与定语之间的语境关系，先行词与which之间的介词不能丢； 3.代表物时多用which,但以下情况只用that,不用which:(口诀：代高序双疑特) （1.）当先行词是anything,everything,nothing,none等指代物的不定代词时 Is there anything that you don't understand? （2.）当先行词由every,any,all,some,no,little,few,much等修饰时，用that但也常被省 I want to read all the books that were written by Lu Xun. （3.）当先行词前有序数词或形容词最高级修饰时，或先行词就是序数词或形容词最高级时 This is the best book that I have ever read. （4.）当先行词既有人又有物时(双) （5.）当句中已出现一个which时,或是特殊疑问词开头的疑问句 Who is the boy that is playing football? （6.）注意：当关系代词前有介词时，先行词是物，后用which引导定语从句：This is the room in which he lives. 4.who/whom引导的从句用来修饰人，分别作从句中的主语和宾语，whom作宾语时，要注意它可以作动词的宾语也可作介词的宾语。 eg: The boys [who are playing soccer] are from Class One. Mr.Liu is the person [(whom) you talked about on the bus]. Where is the man[ that/whom I saw this morning]? 5. 当先行词在从句中充当定语时，关系代词用whose,意为“那一个人的或者他/她/它的”； eg:He has a friend 【whose father is a doctor.】他有一位【（他的）爸爸是医生的】朋友。 五、定语从句中的主谓一致原则 （当关系代词在定从中作主语，定从的谓要与先行词在单复数上保持一致） eg:The bike先行词是单数 [which关系代词作从句的主语 has用单数 a bell] is Lucy's. 有铃的自行车是Lucy的。 六、Do it!(有点难的题，多思考一下，后附解析) 1.I still remember the college and the teachers_____I visited in London years ago. (that/which) 2.The film【_____director is very famous】 won a lot of prizes.(which /whose) 3.The little girl【_______spirit moved everyone】is only 6 years old.(who/whose) 4.What kind of deskmates would you like to choose?--I'd like to choose someone【______I can practice English with】.(which/ /) 5.When I stayed in my hometown during the winter vacation,I went to the old house with my grandma[_____my father was born].(who/in which) 七、深度解析： 1. 先行词有人有物为双，只能用that 2. 做主语，但有名词所以用whose,（它的导演）指明所属关系whose 3. 同第2题目whose 4. 用/，因为先行词是someone所以用that,常常省略 5.从句____my father was born句子成分完整，不缺成分，所以先行词要用关系副词做状语，而先行词是the old house指地点所以用where,也等于in which. My father was born in the house. 学科网（北京）股份有限公司 $