初中英语从句之定语从句，家长该怎么抉择

初中英语的语法知识是非常多的，不下苦功夫学习起来是非常难的，所以在初中的英语学习中，大家还是要多多掌握一些基本的知识。针对于这种情况，下面小编就为大家带来关于初中英语从句之定语从句的有关介绍，希望大家会喜欢。

先为大家介绍一下定语从句的概念：在复合句中，修饰的某个名词或者代词就叫做定语从句。并且被修饰的名词或者代词就叫做先行词，引导定语从句的叫做关系词，定语从句一般是放在先行词的后面的。

一、由which, that引导的从句

它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，作宾语时可以省略，例如：

(1) Prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。(which / that在从句中作主语)

(2) The package (which / that) you are carrying is about to come unwrapped. 你拿那个包裹快要散开了。(which / that在从句中作宾语)

注意： 代表物时多用which，但在下列情况中用that而不用which：

a)先行词是anything, everything, nothing , none等不定代词时;

b)先行词由every, any, all, some, no, little, few, much等修饰时，这时的that常被省略;

二、 限制性定语从句和非限制性定语从句

(1)限制性定语从句是句中不可缺少的组成部分，主句和从句之间不用逗号分开。引导非限制性定语从句的关系代词有who, whom, whose, which, of which等，这些关系代词都不能省略。

(2)非限制性定语从句是对主句先行词的补充说明，没有这种从句，不影响主句意思的完整，一般用逗号把主句和从句分开，关系代词用 which,不用that;指人时可用who,如： I have two brothers, who are both students.

如何简化定语从句

(1).定语从句简化为形容词或形容词短语作后置定语。如:

My grandfather lives in a village that is far away from here.

→My grandfather lives in a village far away from here.我祖父住在离这儿很远的一个村子。

This is a book that is worth reading.

→This is a book worth reading. 这是一本值得看的书。

(2)定语从句简化为现在分词或现在分词短语作前置或后置定语。

The man who is standing under the tree is our English teacher.

→The man standing under the trees our English teacher.

站在树下面的那个人是我们的英语老师。

I saw the house that was burning at that time.→I saw the burning house at thattime.

通过上面的介绍，想必大家对定语从句有所了解，下面小编为大家带来定语从句的典型例题讲解：

例 1 The book______ is sold out atthe moment.

A. you need B. what you need