英语四六级考试中阅读翻译、写作、选词填空，没有不用语法的。大家如果在备战这项考试的时候，一定要注意相关语法的运用。今天来看看英语四六级考试常见的语法考点，说不定对你的备考就有帮助呢!感兴趣的朋友快跟上来吧!

一、定语从句 

引导定语从句的有关系代词 as，who，whom，whom，which，that 和关系副词when，where， why 等。

引导定语从句

(1)as 引导定语从句，相当于 which。如 I am from shanghai，as/which you know.

但 as 引导的定语从句可以放在句首，而 which 不能;

例：As you know，1am from shanghai。

(2)as 可作为关系代词来引导定语从句，既可以单独引导从句，又可以与主句中的 the same 或 such 相呼应，从句中的谓语动词常省略。

2.关系代词 that 与 which 用法区别：

(1)which 可以引导一个非限制性定语从句，that 则不能;

(2)which 之前可以有介词，that 之前则不能;

(3)只能用 that，而不能用 which 的主要情形:

——当先行词是 all，anything，few，litule，much，none、nothing，something 等不定代词时：

——当先行词被序数词或形容词最高级修饰时;

——当先行词被 the very，the only 等词修饰时。

例：Medical researchers are painfully aware that there are many problems to which they have not found solutions so far.

二.状语从句 

1.让步状语从句

(1)由 no matter + wh-疑问词【no matter what】和 wh-疑问词+ever【whatever】。但 wh-疑问词+ever 【whatever】引导的名词从句则不能用 no matter替换。

Take the coat , no matter what coat it is / whatever coat it is.

(2) No matter whether...or...结构中可将 no matter 省略，形成 whether...or..或 whether...or not 引导选择条件句。

例; The substance does not dissolve in water whether {it is}heated or not.

2.条件状语从句

翻译条件状语从句时，要注意时态的选择。

例;Please come here at ten tomorrow morning if it is convenient for you。条件状语

从句，用if引导;主句是祈使句，相当于将来时态，故从句应用一般现在时。

3.时间状语从句

例;We do not know it until a doctor discovered it by chance 。

4.原因状语从句

常见引导原因状语从句的引导词有;because，as，now that/since， in that等。

三.名词性从句

1.主语从句

汉语中的“的”字结构可译成英语的主语从句，用 what 引导，相当于 the thing that.

例: What many people have not realized is that read books is a insteresting thing.

2.表语从句

In my seventies, one change I notice is that I am more easily to get tired than before.

四.比较结构

...as【与...一样】，more..than 【比...更】，a bit/a little/a lot/even/far/gretly/many/much/sightly/still-+形容词/副词比较级这些结构。

注意：more than 表示“不只是，只不过”;no more... han...not..any more than..,表示‘与...一样不...”。

例：I would prefer shopping online to shopping in a department store because it is

more convenient and time-saving.

例：Since my childhood I have found that nothing is more attractive to me than

reading.

2. The more...the more...“越...越...”

例：The more you explain ，the more confused me。

3.倍数表达法

——A is 倍数+the size/length/width of B 【A是B 的几倍大/长/宽】

——A is 倍数+形容词或副词原级+as B 【A 是 B 的几倍】

——A is 倍数 more than B 【A 是 B的几倍】

例：On average,it is said, visitors spend only half as much money in a day in Leeds

as in London.

4.表示与...相比较的短语 compare with 和 in comparison with

例：Your losses in trade this year are nothing compared with/in comparison with mine。

五.情态动词

1.情态动词中的 must，can，could，may，might都表示推测。其中 must 可能性最大，can 和 could 其次，may 和 might 最小。

2.情态动词完成时所表达的意义：

——could have done 本可能做

——may/might have done 也许做了

———should have done 本应做

——must have done 肯定做过

六.倒装结构

1.有否定含义的副词或短语位于句首作状语，这类词有：neither，never, no, rarely, hardly...when, little，few， in no case ，no sooner...than等。

例:Not until he fanish his work did he realize he was seriously ill.

2.含有 only的状语或宾语位于句首时，其句子的主谓要部分倒装。

例：Not only did he charge me too much，but he completed his mission。

3.虚拟语气的让步状语从句中，在省略了 If的情况下主谓部分倒装。

Had I taken your advice 【ifI had taken your advice 】, all this misery might have

been avoided.

七.虚拟语气

①would rather+that从句+一般过去时;

②It vital / necessary / important /urgent/ imperative /desirable /advisable /natural/ essential+that+(should)动词原形;

③proposal/suggestion+that+动词原形;

④it is time/about time/high time+that+一般过去时;

⑤lest+that+should+动词原形;

⑥if only+that+would+动词原形。

英语四六级考试的相关考点大家要弄懂，平时的训练也要努力，这样在考试中才有可能取得好成绩。如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学，扫一扫领200畅学卡。