初中英语知识点：连词的用法.docx

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1、 中考英语连词讲解并列连词并列连词用法例句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.or意为“或者”，表示任选其一Do you want to go the zoo or the museum?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.so表示因果关系Its raining

2、 heavily now, so we have to put off the P.E class.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.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 Eng

3、lish.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.难点1. not onlybut also. 连接两个句子时，若not only位于句首，后面的句子要部分倒装。如：Not only did he work out the problem in such a short time, but also he did quite well. 他不仅在如此短的时间里解决了那道难题，而且做得相当不错。从属连词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

4、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Dont 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.after在-之后“在之后”，从句的动作通常发生在主句动作之前He turn

5、ed off the light and went to bed after he cleaned the room.until常用在“not.until.”结构中，表示“直到才”Nancy didnt appear until it was ten oclock last night.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.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 Ill write a letter t

6、o you as soon as I get to America.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.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

7、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 doesnt work hard.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 wont finish the work unless he works hard.2. If it doesnt rain, go for a picnic.as long as只要主句用一般现在时，主句通常用一般

8、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及用法例句though虽然，尽管引导让步状语从句时，不能与but同时使用。Although it was raining hard, he still went out.althougheven/ though if即使whatever无论什么等于no matter whatWhatever you may say, I will not change my mind.whenever无论什么时候等于no matter whenWhenever you

9、come to my home, I will treat you well.4.引导原因状语从句的从属连词连词用法例句because因为表示某事件发生的直接原因，回答why引导的问句，不能与so连用。He didnt go to school because he had a bad cold.since既然表示大家都知道的原因。Since you have known it, I neednt tell you about it.as由于，因为表示因客观存在的情况，造成某事件的发生。As it is very cold in Beijing in winter, you had bette

10、r take more clothes.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.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 couldnt go any farthersuch -thatsuch后跟名词或名词性词组。Its such a fine day that many people go to the park for fun.7.引导目的状语从句的从属连词连词意义用法so that以便于，为了They sped up so that they could get there on time.in order that为了5