2023年九年级中考复习：英语连词考点知识梳理
连词
是一种在句子与句子之间，短语之间以及名词等其他词语之间起连接作用的虚词，它不能单独作句子的成份。按其意义可分为并列连词和从属连词两大类。
常有的并列连词有
并列连词连接的双方是对等的。and, both…and, either…or, neither…nor， not only…but also, as well as等。但如果连接的两部分意义不趋向一致，：but, however, while (而)，only (只不过)。
还有表示选择关系的并列连词，
如：or, or else, otherwise… 再有的是连接双方，互为因果，或表示前因后果的连词有：for, so, therefore (因此)，then等。
从属连词在初中范围内常常用来连接名词性从句，
如：that, if, whether, 其次用来连接状语从句。：when , while, as, since, before, after, once, as soon as, until, till。
连接条件状语的连词有：
if, unless, as long as 等，because, since, as, now that (既然)。so that, so…that, such…that, as…as, than, where… 它们在句子与文章中几乎无处不见。
|
并列连词 |
用法 |
例句 |
|
and |
表并列或顺承关系 |
He came into the classroom and put his schoolbag on the desk. |
|
用于“祈使句，and +陈述句”结构 |
Be careful, and you will make fewer mistakes. |
|
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or |
意为“或者”，表示任选其一 |
Do you want to go the zoo or the museum? |
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意为“否则”，用于“祈使句，or +陈述句”结构 |
Please be quick, or we will miss the last bus. |
|
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so |
表示因果关系 |
It’s raining heavily now, so we have to put off the P.E class. |
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for |
表示原因，及附带理由 |
I must be off now, for it is getting late. |
并列连词短语
|
连词短语 |
意义用法 |
例句 |
|
neither--nor- |
既不--也不,谓语动词的数遵循“就近原则” |
Neither he nor his children like fish. |
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either--or-- |
或者--或者--，谓语动词的数遵循“就近原则” |
Either you or he is wrong. |
|
both--and-- |
两者都，谓语动词用复数形式 |
Both she and I are good at English. |
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not only-- but also |
不但--而且-，谓语动词的数遵循“就近原则” |
Not only you but also he wants to buy the book. |
1.引导时间状语从句的从属连词
|
从属连词 |
用法 |
例句 |
|
when 当--时候 |
引导的从句中，谓语动词可以是短暂性动词也可以是延续性动词 |
It was raining when he came out of the office. |
|
while 当--时候 |
引导的从句中，谓语动词必须是延续性动词，且常用进行时 |
Don't make any noise while others are reading in the library. |
|
before 在--之前 |
“在……之前”，从句的动作通常发生在主句动作之后 |
She reached the train station before he called her yesterday. |
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after 在---之后 |
“在……之后”，从句的动作通常发生在主句动作之前 |
He turned off the light and went to bed after he cleaned the room. |
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until
|
常用在“not...until...”结构中，表示“直到……才……” |
Nancy didn't appear until it was ten o'clock last night. |
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as 一边--一边 |
表示一件事情在发生，另一件事情也在同时发生 |
The students took notes as they listened to the radio in English class. |
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as soon as 一--就-- |
表示从句的动作一发生，主句的动作就随之发生 |
I'll write a letter to you as soon as I get to America. |
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since 自从 |
从句常用一般过去时，主句用现在完成时 |
The girl who can speak English smoothly has lived in London since she was five years old. |
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once 一旦 |
表示从句动作一发生，主句的动作就随之发生 |
Once they find people in trouble, they are eager to help them without payment. |
2.引导条件状语从句的从属连词
|
连词 |
用法 |
例句 |
|
if 如果 |
主句用一般现在时，主句通常用一般将来时，即主将从现，但有时用主情从现或主祈从现。 |
1.If he has time tomorrow, he will come to the meeting. 2.None can succeed if he doesn’t work hard. |
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unless 除非，如果不 |
主句用一般现在时，主句通常用一般将来时，即主将从现，但有时用主情从现或主祈从现。。 unless可转化成if--not结构。 |
1.He won’t finish the work unless he works hard. 2.If it doesn’t rain, go for a picnic. |
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as long as 只要 |
主句用一般现在时，主句通常用一般将来时，即主将从现。 |
You can take any book as long as you like. |
3.引导让步状语从句的从属连词
|
连词 |
意义 |
例句 |
|
because |
表示造成某种情况的直接原因，语气最强，常用来回答由why引导的问句，其从句的位置通常在主句的后面。 |
He has to leave because it is too late. 因为太晚了，他不得不走。 |
|
since |
since语气比as稍强，不表示直接的或根本的原因，而是一种已知的或非常显然的理由，since引导的从句通常位于主句之前。 |
Since everyone is here, let’s start. 既然大家到齐了，我们就出发吧！ |
|
as |
as是从属连词，表示原因时，语气最弱，所说的原因比较明显或是已知的事实，它引导的从句一般位于主句之前。 |
We all like her as she is kind. 我们都喜欢她，因为她善良。 |
5.引导方式状语从句的从属连词
|
连词 |
意义 |
例句 |
|
as |
按照--方式 |
She always does as her father tells her. |
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as if |
似乎，好像 |
He walked around as if he was looking for something. |
6.引导结果状语从句的从属连词
|
连词 |
意义 |
用法及例句 |
|
so --that |
如此--以至于 |
so后跟形容词副词原形。(so--that--结构常与too--to结构转化）。 She was so tired that she couldn’t go any farther
|
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such --that |
such后跟名词或名词性词组。 It’s such a fine day that many people go to the park for fun. |
7.引导结果状语从句的从属连词
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连词 |
意义 |
用法 |
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so that |
以便于，为了 |
They sped up so that they could get there on time. |
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in order that |
为了
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