(完整word版)中考英语语法-复合句

人教版中考英语专项练习 复合句

由一个主句和一个或一个以上的从句构成的句子叫复合句。主句为句子的主体，从句只是做句子的一个成分。根据从句在句子中的作用，可以把从句分为名词性从句（主语从句，宾语从句，表语从句和同位语从句），定语从句和状语从句（时间，地点，原因，条件，让步，方式，比较等）三类。

一.宾语从句

1.宾语从句根据引导词的不同分为三种类型

⑴由that引导的宾语从句，其中that不做成分，可省略。

We all knew (that) we should learn from each other.

⑵由if/whether引导的宾语从句。

Please tell me if/whether you have been to America.

⑶由who,where,how等连接代词或连接副词引导的宾语从句。

Can you tell me how I can get to the nearest post office?

2.宾语从句“三关”

⑴引导词关

注意：whether与if的区别

只用whether的情况

① 在介词后面 We don`t think about whether it would rain the next day.

② 在动词不定式前 They asked me whether to sit at the front.

③ 当与or not连用，或提出两种选择时 Mary asked whether I was

doing my homework or not at that time ④ 宾语从句提前时 Whether this is true or not, I can`t say

⑤ 在动词discuss后的宾语从句中 We discussed whether we should

have a sports meeting next week.

⑥ 引导表语从句或位于句首的主语从句用whether

The question was whether he went there last night

只用if的情况

① 引导否定概念的宾语从句时

He asked me if I had`t finished my homework

② 引导条件状语从句时，if意为“如果”

We`ll go hiking if it doesn`t rain tomorrow

⑵语序关

① 宾语从句若为陈述句，语序不变

② 宾语从句若为一般疑问句或特殊疑问句，语序还原为陈述语序

⑶时态关

① 如果主句是现在的时态，从句时态据实际情况而定

② 如果主句是过去某种时态，从句时态一定变为过去某时态

注意：宾语从句表述的是客观真理，自然现象时，只能用一般现在时

3.人称变化：

4.从句简化

⑴当主句谓语动词是find, see,watch,hear等时，从句常简化为“宾语+宾补”结构，宾补为省to不定式或v+ing形式

She found that the wallet lay/lying on the ground.→ She found the wallet lie/lying on the ground.

⑵当主句谓语动词是hope,wish,decide,forget等，且主句主语与从句主语相同时，从句简化为不定式结构

She agreed that she could help me with my maths. →

She agreed to help me with my maths.

⑶在连接代词/副词引导的宾语从句中，当从句主语与主句主语或间接宾语一致时，宾语从句简化为“连接代词/副词+不定式”结构

Can you tell me how I can get to the station? →

Can you tell me how to get to the station?

5.否定转移

如果主句的谓语动词是believe,think,guess,suppose等，且主句主语是一人称时，后面所接宾语从句的否定词通常前移到主句中。

I don`t think that she can finish this work on time.

注意：①这种否定前移的宾语从句，在变成反意疑问句时，反意疑问句的主谓要与从句一致

I don`t think he is interested in that, is he?

③ 如果主句主语是二三人称时，宾语从句否定词不前移，反意疑问句反问主句

She thought that film was not interesting, didn`t she?

二．状语从句

1.时间状语从句 常用when, as, while, before, after, since, till, until,

as soon as等来引导。在时间状语从句中，通常用现在时态表示将来的动作或状态。在带有till或until引导的时间状语从句的主从复合句中，如果主句用肯定式，其含义是“一直到…时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到…才…”, “在…以前不…”，谓语动词可用瞬间动词。Since引导的时间状语从句，主句用一般现在时或现在完成时，从句用过去时。 While引导的状语从句的动词必须是延续动词，不能是短暂性动词。

as, when, while都表示主从句的动作或状态同时发生。as强调两动作同时进行，并表示对比；发生时间较短，且由“一边…一边…”的意思。When还可表示从句动词的动作在主句动词的动作“之前”或“之后”发生。While用于时间较长时。

When you have finished your work, you may have a rest.

2.条件状语从句

通常用if, unless引导。在条件状语从句中，谓语动词通常用现在时表示将来的动作或状态。

I`m waiting for my friend. If she doesn`t come, I`ll go shopping alone.

3.原因状语从句

通常用because, since, as（由于）引导。because表示直接原因，语气最强。because引导的原因状语从句多放在主句之后。回答 由why提出的问题，只能用because。as和since语气较弱，一般用来表示明显的原因。由as和since引导的从句多放在句首。because和so不能同时出现。

As the weather is so bad, we have to delay our match. 4.结果状语从句

由so…that, such…that, so that 引导。so…that与such…that可以互换。如果名词前由many, much, little, few等词修饰时,只能用so. so…that句型的否定形式可用简单句too…to…或not…enough to代替

such+形容词+不可数名词/复数可数名词+that

snch+a(an)+形容词+单数可数名词+that=so+形容词+a(an)+单数可数名词+that

Last night Judy worked so late that she didn`t catch the early bus this

morning.

5.比较状语从句

通常由as…as, than等连词引导

Though the player is over thirty, he can still run as fast as some young

players

6.目的状语从句

通常用so that, in order that引导。so that即可引导目的状语从句，又可引导结果状语从句。区别是： 目的状语从句中往往带有情态动词can, could, may, might等，从意义上看，目的状语从句表示的目的很明确。 Pass the cake round so that everyone can take a piece.

7.让步状语从句

通常由though, although, as等连词引导。although, though与but不同时出现。Though he is old, he is very strong.

8.地点状语从句 通常由where, wherever引导

Wherever I am I will be thinking of you.

9.方式状语从句

通常由as, as if, as though等引导

Always do to the others as you would be done by.希望别人怎样待你，你就怎样待人

三．定语从句

指在主从复合句中充当定语的句子，在句中修饰名词、代词，常由关系代词which, that, who(m), whose及关系副词when, where, why等引导。被定语从句修饰的词叫先行词。定语从句放先行词后做后置定语

1. 当先行词表示人时，定语从句用关系代词that, who, whom引导。当先行词表物时，定语从句用关系词that或which。当关系代词在从句中作宾语时可省略。

⑴ that可指人，也可指物，在从句中可作主语，宾语。作宾语可省

⑵ which指物，在从句中作主语，宾语，作宾语时可省，可以引导非限制性定语从句，有时可与that互换。

⑶ who, whom, whose指人，who在从句中做主语，whom在从句中作宾语，whose在从句中作定语

He is the man whom/that I saw yesterday.

The package which/that you are carrying is too heavy.

Please pass me the book whose/of which cover is green.

2. 当引导词在句中作状语时不可用that, which, who(m)等关系代词，