高考英语定语从句
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定语从句是英语诊断中一个重点考察点，所以同学们务必要掌握哦，以下是小编为大家整理的高考英语定语从句知识点，希望对大家有所帮助。
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定语从句这一语法在英语语法中有着举足轻重的地位，无论是日常工作、生活中的交流，还是各大英文诊断，定语从句可以说是频繁“出镜”，形式多样，那么针对于高考英语，定语从句将以怎么样的形式考查大家呢，我们还是先来弄清什么是定语从句吧。
我们汉语中所说的定语是修饰、限定的意思，通常来说，用形容词来做定语，修饰限定名词。比如说，女孩：girl，漂亮的女孩：a beautiful girl, 机灵的女孩：a smart girl。beautiful/smart 作为形容词用来修饰名词girl 做定语，也就是我们通常所说的形容词作定语。但是在日常生活交流以及书面表达中，多数情况我们无法用一个单个的在单词（在词典中能够查到的）来表达清楚所要描述的事情，比如说，母亲在医院上班的女孩，我们无法在词典中找到修饰女孩的那一连串词语，即，母亲在医院上班的，那么这个时候就需要我们使用定语从句来表述，这就是简单意义上的定语从句。接下来的内容会非常全面、细致的讲解定语从句的使用规则，在有了更深入的理解之后，能够准确的写出较为复杂的定语从句，在高考作文中会给你带来意想不到的惊喜。开始学习吧！
一、概念
在复合句中，修饰名词或代词的从句称为定语从句。
The old man who/ whom / that we visited yesterday is a famous artist.
其中所饰名词即the old man 称为先行词，引导定语从句并在其中充当句子一个成分的词称为关系词(如上句中的who/ whom / that)。关系词的用法与选择须考虑它在定语从句中的成分。下面分类讲解它们的用法。
二、用法
定语从句常用引导词有：that,which, who, whose, as, where, when, why。
1．that指人或物，作主语或宾语(作宾语可省略)
I like the books that were written by Lu Xun.
The student that won the first prize is our monitor.
2．which指物，作主语或宾语(作宾语可省略)
These are the trees which were planted last year.
Is this the library(which) you borrow books from?
3．who指人，作主语或宾语(作宾语可省略)
The man whovisited our school yesterday is Mr Brown.
He is the manwho I want to work with.
4．whose指人或物，作定语，表示“……的”，可转换为“of＋关系代词”。
Miss Wang istaking care of the child whose parents have gone to Beijing.
I saw some treeswhose leaves were black.
5．注意that和which的区别
(1)先行词为不定代词everything，little，much，all，anything，nothing,something, no, some, any, few, one等时，关系代词只能用that。
We are willingto do anything that is good to the people.
(2)先行词前有形容词更高级修饰时，用that。
This is the best book (that) I've ever read.
(3)先行词被序数词或者the only(先进的)，thevery(正是那个)，thelast修饰时，用that。
The first bookthat I read last night was an English novel.
(4)如果有两个或两个以上分别表示人和物的先行词时，定语从句的关系代词只能用that。
We know nothingabout the doctors and the hospitals that you are talking about.
(5)以疑问词(who,which, what)开头的疑问句，为避免重复，用 that。
Which is thebook that you borrowed from the library?
(6)关系代词放在介词之后，指物时只能用which，不能用that。
This is thefactory in which we once worked.
(7)非限制性定语从句中，指代物或一种情况时，用which，不能用that。
This is thebook, which is written by Lu Xun.
The baby wasill, which made the mother very worried.
6．关系副词when引导定语从句修饰表示时间的先行词，在定语从句中充当时间状语。
Next month, whenyou'll spend your summer holidays in your hometown, is approaching.
7．关系副词where引导定语从句修饰表示地点的先行词，在定语从句中充当地点状语。
She is going to live in Macao, where she has some close friends.
8．关系副词why引导限定性定语从句修饰先行词reason,在定语从句中充当原因状语。
He didn't tellme the reason why he was so upset.
以上是小编为大家整理的高考英语定语从句，希望对大家有所帮助。
