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高考英语的语法知识点

作者:opple 时间:2022-12-27 阅读:()

  举例:

  All that is needed is a supply of oil. 所需的只是供油问题。

  Finally, the thief handed everything that he had stolen to the police. 那贼最终把偷的全部东西交给了警察。

  3) as的用法

  AS作关系代词,用来引导定语从句:限制性定语从句和限非制性定语从句 一、AS引导限制性定语从句

  AS引导限制性定语从句时,通常和such, the same, as(so)等连用,构成such...as/such as, the same...as/the same as, as(so)...as等结构,在从句中可作主语,宾语和表语。

  1.such...as/such as意为―...的那种...,像那样的‖,such...as/such as引导限制性定语从句时,既可指人,也可指物。such用于名词之前时,具有形容词性质;such单独使用(即后面不接名词)时,具有代词性质。

  Don‘t trust such men as praise you to your face.(as作主语) 不要相信那种当面吹捧你的人。

  You should read only such books as you can understand without much difficulty.(as作宾语) 你应当只读那些你读起来不太难懂的书。

  Associate with such as will improve your manners.(as作主语) 要和能改善你的言行的那种人结交。

  2.the same...as/the same as意为―与...同样的‖,和such一样,the same既有形容词作用,又有代词性质。

  We have arrived at the same conclusion as they have.(as作宾语) 我们已得出和他们同样的结论。

  比较:the same...as和the same...that不同,前者是―同那一个相似‖,后者是―正是那一个‖。如:

  This is the same watch as I lost. 这同我丢的那块表一样。

  This is the same watch that I lost? 这正是我丢的那块表。

  3.as(so)...as意为―和...一样‖,后接由many, much等修饰的名词或由形容词修饰的单数名词,注意其语序为as(so)+adj.+a+n+as,如: It‘s as pleasant a film as I have ever seen. 这是一部和我以往看的同样好的电影。

  As many soldiers as marched were killed. 很多游行的战士都被杀了。

  注意:such ...as与such...that ,so...as与 so...that的区别: that是连词,引出结果状语从句,在从句部分不作成分;as是关系代词,引出定语从句,在从句中可作主语,宾语和表语。比较: He is such a nice boy that everyone likes him. He is such a nice boy as everyone likes.

  It is so difficult a problem that nobody can work it out. It is so difficult a problem as nobody can workout.

  篇6:英语语法知识点

  英语语法知识点

  after与behind的用法区别

  两者均可表示“在…之后”,其区别是:

  (1) after 主要用于时间或次序,behind 主要用于位置:

  He decided to leave after lunch. 他决定午饭后离开。

  Summer comes after spring. 春去夏来。

  The hospital is behind the post office. 医院在邮局后面。

  behind 有时也用于时间,表示“迟于”,主要用于behind time (迟,晚)这一习语:

  The train was 20 minutes behind time. 火车晚点 20 分钟。

  (2) 两者都可用于引申义,after 侧重指追求、寻找、模仿等;而behind 则侧重指在背后、支持、落后等:

  The police are after her. 警察在追捕她。

  Many young people are after her 初中数学. 许多年轻人都追求她。

  We are behind you completely. 我们完全支持你。

  He is behind the others in maths. 他的不如别人。

  if 和 whether用法

  if 和 whether用法

  whether和if用法相同吗?

  有时相同,有时不同。 whether和if都可作宾语从句的引导词,意为“是否”,在一般情况下可以互换。if多用于口语和非正式文体中,whether则多用于比较正式的文体中。例如:

  She asked me if/whether I could help her with if 和 whether用法 her English.她问我是否能帮她学。

  I don't know if/whether it is going to rain.我不知道是否会下雨。

  它们之间的相同点我已明白。它们之间有什么不同呢?

  [老师]在下列六种情况下,只能用whether,不能用 if:

  1.在带to的'动词不定式前。例如:

  She hasn't decided whether to go or not.她还没有决定去还是不去。

  He doesn't know whether to go to the cinema or to watch TV at home.他不知道是去看电影还是在家看电视。

  2.在介词后面。例如:

  I'm thinking of whether we should go fishing.我在想我们是否该去钓鱼。

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