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2025年12月大学英语四级常考语法

2025-08-01 13:48:00 来源:无忧考网
【导语】2025 年 12 月大学英语四级考试中,语法虽不单独设题,却如隐形脉络贯穿于听、读、写、译各题型,是实现全面突破的关键前提。以下为你梳理核心语法考点,助你搭建坚实的应试框架。以下是®无忧考网为大家精心整理的《2025年12月大学英语四级常考语法》,欢迎大家阅读。
 

1.2025年12月大学英语四级常考语法 篇一

  名词性从句

  在句子中起名词作用的句子叫名词性从句 (Noun Clauses)。 名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同的语法功能,名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。

  分类

  引导名词性从句的连接词可分为三类:

  连词(5个):that (本身无意义。引导单一的宾语从句时that常可省略,但引导主语从句、表语从句、同位语从句时that通常不被省略)

  whether,if (均表示“是否”表明从句内容的不确定性)

  as if ,as though (均表示“好像”,“似乎”)

  以上在从句中均不充当任何成分

  连接代词(10个):what, whatever, who, whoever, whom, whomever, whose,whosever, which, whichever

  连接副词(7个):when, where, how, why, whenever, wherever, however

  不可省略的连词:

  1. 介词后的连词。

  2. 引导主语从句和同位语从句的连词不可省略。

  That she was chosen made us very happy.

  We heard the news that our team had won.

  3. 在从句中做成分的连词.

  比较

  whether与if 均为"是否"的意思。 但在下列情况下,只可用whether:

  1. whether引导主语从句并在句首。

  eg:Whether he can come to the party on time depends on the traffic.

  2. 引导表语从句。

  eg:The question is whether we can get in touch with her.

  3. whether从句作介词宾语。

  eg:I am thinking about whether I should quit my present job.

  4.if与whether都可以与or not 连用,但后面紧跟or not 时只能用whether。

  We didn't know whether or not she was ready.(此时只能用whether)

  I wonder whether/if the news is true or not.(此时则二者都可以用)

  5.后面直接跟动词不定式时。

  6.引导同位语从句时。

2.2025年12月大学英语四级常考语法 篇二

  倒装结构

  1) 当表示否定或基本否定的词或词组位于句首作状语时用倒装。这类词或词组常用的有:never, nowhere, seldom, rarely, little, hardly, scarcely, barely, not until, not only, by no means, in no time, under no circumstances, under no condition, in no way, in no case, at no time, on no account等。

  Never have I heard it before.

  Nowhere can I find my lost watch.

  Under no circumstance should a student cheat in the exam.

  Not only was Churchill a statesman, but also a poet.

  Note: 当 “no sooner … than”和“hardly/scarcely … when/before”位于句首时用倒装。该结构表示“一…就…”,在时态上主句一般用过去完成时,when或than引导的从句用一般过去时。

  Hardly/Scarcely had I got home when/before the bell rang.

  No sooner had the performance begun than the lights went out.

  2) 当here, there, then, thus, only, hence, little等副词位于句首,句中主、谓用倒装。

  Here is the book for you.

  There goes the bell.

  Then came the order to take off.

  Thus arose the division between the developed and developing countries.

  3) 当 “so/such … that”结构中的so或such 位于句首时用倒装。

  So cold was it at night that I could hardly fall asleep.

  Such was the force of explosion that all the windows were broken.

  4) 分句以so, neither, nor, no more等副词位于句首,表明前面句子中所说明的情况也使用于后面的句子时用倒装。

  Copper is a good conductor. So are many other metals.

  He didn’t see the film last night, neither did she.

3.2025年12月大学英语四级常考语法 篇三

  定语从句

  定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后,由关系词(关系代词或关系副词)引出。

  关系代词有:who, whom, whose, that, which等。

  关系副词有:when, where, why等。

  在复习英语四级考试的过程中,大家是不是对语法部分很头疼呢?以下是定语从句的知识点归纳,超级详细!

  1.先行词为all, anything, something, nothing, everything, much, little, none等不定代词时,关系代词一般只用that,不用which。在大多数情况下that可以省略.

  Please tell me everything (that) you know about the matter.

  2.as引出的限制性定语从句

  在such …as的结构中as可作关系代词,引出限制性定语从句。有时和same连用,在从句中可作主语、宾语或表语等。

  Such people as were recommended by him were reliable.

  3.as引出的非限制性定语从句

  as可作关系代词引出非限制性定语从句,代替整个主句,通常译为“(正)如…一样”,“(正)象…一样”等。as引导的从句一般用逗号与主句隔开,可以位于主句的前面、中间或后面.

  I live a long way from work, as you know.

  4.分隔式定语从句

  定语从句一般紧跟在先行词之后,但有时会被其他句子成分与先行词隔开,从而构成分隔式定语从句。

  The days are gone when power politics worked.

  5.介词+关系代词(which/whom等)引出的定语从句

  如果关系代词(which/whom等)在定语从句中作介词的宾语,那么这个介词可以提到从句前,构成“介词+关系代词(which/whom等)+定语从句”。在这种结构中关系代词不可以用that。

  This is a subject about which we might argue for a long while.

  6.关系代词在限制性定语从句中常可以省略,一般有以下几种情况:

  1) 关系代词在从句中作直接宾语时,在大多数情况下可以省略。

  This is something (that) you must always keep in mind.

  关系代词作介词宾语时,介词位于句尾时关系代词可以省略;介词位于关系代词之前时则关系代词不能省略。

  This is the room (which) Churchill was born in.

  2) 关系代词作主语时一般不能省略,但如果关系代词在由there …be存在句构成的定语从句中作主语时常可省略。

  This is the only book (that) there is on this subject.

  3) 在way后面的定语从句中in which或that通常省略。

  That’s the way (that/in which) I look at it.

  7.非限制性定语从句

  非限制性定语从句修饰先行词或整个主句,起补充说明的作用,如果省略掉,原句句意仍保持完整。非限制性定语从句要用逗号与主句隔开,其引导词不能用that。非限制性定语从句属于正式语体。经常考到的非限制性定语从句有以下三种。

  1)由which、as引导的非限制性定语从句。which、as代表整个主句。

  He said that he had never seen her before, which was not true.

  2)由 “介词+关系代词”引导的非限制性定语从句。

  He sent her a letter, in which he said that he was sorry for what he had done to her.

  3)由 “数词、代词或名词+of +关系代词”引导的非限制性定语从句。

  He had three sons, one of whom was my son’s classmate.

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