根据以英语作为母语的人数计算，英语可能是世界上第三大语言，但它是世界上最广泛的第二语言。以下是威廉希尔app 为大家整理的高考必备英语语法，希望可以解决您所遇到的相关问题，加油，威廉希尔app 一直陪伴您。

定语从句及连词

答题秘诀

as与which均可替代整个主句

在非限制性定语从句中，均可替代整个主句.如从句在主句之后，两者皆可用;如从句在主句之前，用as。介词/逗号后,永远不用that!

Theyfailed in the exam，as/whichisnatural.

As is known to all，theearth moves around the sun.

He passed the College Entrance Examination, made his parents very happy.

A. as B. which C. that D. it

关系代词as的考查。关系代词as引导限制性定语从句时既可指人又可指物。它只能替代由such，thesame等修饰的先行词;as引导非限制性定语从句时，可放于句首，句中或置于句尾，而which则只能置于主句之后。但如果定语从句为否定句或表示否定意义，使用which。As引导的定性定语从句有"正如"之意，而which引导的没有。

〖2010全国Ⅰ〗As a child , Jack studied in a village school ,_____ is namedafter his grandfather.

A. which B.where C. what D. that

空格设置在名词school后, 且school后有逗号, 此题考查非限定性定语从句。定语从句所修饰的先行词是school, 它在定于从句中做主语, 因此使用关系代词, 选项中的关系代词只有which和that, 由于是非限定性定语从句, 不能使用that, 因此选择A。

〖2010四川〗After graduating from college, I took some time off to gotravelling, turned out tobe a wise decision.

A. that B. which C. when D. where

此处应为which引导的非限制性定语从句, which代替前边整个句子。句意为： “大学毕业后, 我们休假一段时间去旅游, 这结果证明是一个明智的决定。”

〖2009山东〗Whenever I met her,_________ was fairly often, she greeted me with a sweet smile.

A. who B. which C. when D. that

不论何时遇见她, 她总是用甜美的微笑和我打招呼,这是非常经常的事。考查非限制性定语从句, 从句_________ was fairly often插在主句中的时间状语从句后, 关系代词which可代替主句整个句子的意思并在从句中作主语。答案B。

〖2009辽宁〗They’ve won their lastthree matches, ________I find a bit surprising

A. that B. when C. what D. which

此处意思是 “他们赢得了最后的三场比赛, 我觉得这确实有点让人意外”, which代替上句 “They’ve won their last three matches”做find的宾语, 选D。A项不能用于非限制性定语从句中, B, C此处没有他们的意思。

状语从句及连词

While是解!

◆常接持续性的动词，强调主从句谓语动作同时发生，常用进行时。有时还有对比意义，意为“然而”。

◆主句从句主语不同,表示“而…”

Ido every single bit of housework __ my husband Bob just does the dishes now and then.

A. since B. while C. when D. as

◆While置于句首可表示As long as 或Although

While there is life there is hope.

While I admit his good points, Ican see his bad ones.

(2008湖南)______ the Internet is of greathelp, I don’t think it’s a good idea to spend too much time on it.

A. If B. While C. Because D. As

〖2011四川卷〗 volleyball is her mainfocus, she’s also great at basketball.

A. Since B. Once C. Unless D. While

虽然排球是她的主要项目，但她还擅长篮球。while“虽然，尽管”。答案D。

〖2010全国Ⅰ〗Mary made coffee ________ her guests were finishing their meal .

A. so that B. although C. while D. as if

so that译为 “以便”表示目的, although译为 “尽管, 虽然”, as if译为 “好像”, while译为 “当….的时候”, 因此while符合句意, 选择C。

〖2009安徽〗—Iwonder how much you charge for your services.

—The first two arefree the third costs $30.

A. while B.until C. when D.before

while表转折 “而, 然而”。根据句子意思, 前两份免费, 而第三份要$30。

〖2006全国Ⅱ〗Wethought there were 35 students in the dining hall, , in fact, there were 40.

A.while B.whether? C.what D.which

此题考查连词的用法。while在此表示转折, 意为 “但是, 而”。

〖2006天津〗Thecost of living in Glasgow is among the lowest in Britain, the quality of life is probably one ofthe highest.?

A.since B.when C.as D.while

根据句中among the lowestin Britain和probably one of the highest可知前后的意义存在对比;while用作连词,可用于表示对比或相反的情况, “而;但是”。

名词性从句

区别什么从句应看主句，主句不完整时从句肯定是名词性从句。主句完整时，从句可能是定语从句，状语从句，或者同位语从句。

需要用什么引导词看从句。名词性从句中缺什么意思用什么意思的引导词;缺名词性成份时，指人用who/whom，指物用what; 不缺意思和成份时用that。That只有在宾语从句中可以省略。