[四六级英语语法总结]六级英语语法.doc

[四六级英语语法总结]六级英语语法
六级英语语法主要讲的是哪方面的，不管怎么说，基础的语法是逃不过的。下面是小编给大家整理的六级英语语法，供大家参阅!
六级英语语法：定语从句
, 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.

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.

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.

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.
+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.
,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.

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.
六级英语语法：状语从句
1) 时间状语从句
时间状语从句主要由以下连词引导：when, whenever, as, while, since, until, till, before, after, as soon as, once, hardly (sc