连接单词与单词、词组与词组、句子与句子、从句与主句的词叫连词。连词也是虚词，不能独立作句子成分。连词分为并列连词和从属连词两种，下面就来说说英语口语连词用法，大家千万别错过。
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英语口语连词用法
并列连词
并列连词用于连接两个或者两个以上并排列举的单词、词组或者句子，从属连词用于连接从句和主句。
连接单词与单词:
books and pens 书和笔
连接词组与词组:
at school or at home 在学校或者在家里
连接句子与句子:
You are 12 and she is 10. 你12岁，她10岁。
连接从句与主句:
What he said was right.他说的话是正确的。
01
常见并列连词
and, or, but
so, both…and,
not only…but also
either…or, neither…nor
as well as, for
hence, therefore
however, nevertheless等
02
并列连词的用法
大多数时候，并列连词是连接两个事物，少数时候连接三个甚至更多的事物。
连接两个事物:
We are going to invite John and Mary.
我们打算邀请约翰和玛丽。
Do you choose A or B?
你选择A还是B?
We’d better get up early or we’ll be late.
我们早点起床为好，否则会迟到。
It was raining, but they didn’t stop their work.
天在下雨，但他们没停止干活。
He didn’t sweat, nor did he pant.
他没出汗，也没喘气。
连接三个以上的事物:
There were Bob, Paul, Mary and Henry.
有鲍勃、保罗、玛丽和亨利。
You may buy apples, pears, oranges or peaches.
你可买苹果、梨子、橘子或者桃子。
03
并列连词 and
(1) 表示联合，意为“和”、“又”、“而且”:
例:We were cold and hungry. 我们饥寒交迫。
(2) 有时用于连接两个相同的词语，表示连续性:
例:The train ran faster and faster. 火车开得越来越快。
(3) 在口语中用在 come, go, run, stay, stop, try 等之后表示目的，大致相当于不定式符号 to:
例:Come and have tea with me. 过来跟我一起喝杯茶。
(4) 有时用在祈使句后，表示结果，意为“那么”:
例:Work hard and you’ll succeed. 努力干吧，你会成功的。
(5) 有时表示对比(有类似but的意思):
例:He is rich, and (yet) leads a modest life. 他很富有，但却过着朴素的生活。
(6) 用在 good, nice, fine 等之后，表示“很”，“挺”:
例:It’s nice and cool under the tree. 这树下很凉快。
04
表示转折关系的
but(可是，但是)表转折，前后意思相反
while(而，然而)一般放在句中。
however(然而，但是)，可用于句前和句中，但要用逗号隔开。
从属连词
01
引导宾语从句的连词
(1) that 连接由陈述句转变而来的宾语从句。
(2) who,whom,what,which,whose,when,where,why,how连接由特殊疑问句转变而来的宾语从句。
(3) if/ whether 连接由一般疑问句转变而来的宾语从句。
02
引导状语从句的连词
(1) 时间状语从句:when ,before ,after, until ,as soon as (主将从现)
(2) 条件状语从句:if , unless
(3) 原因状语从句:because
(4) 方式状语从句:than
(5) 结果状语从句:so… that … ,such… that…
(6) 让步状语从句:though /although
(7) 目的状语从句:so that
03
不能同时出现在一个句子中的连词
(1) because ,so 不能同时出现在一个句子里，只用其中之一。
例:Because in our school knew him ,so we had no trouble in finding him.
(2) though /although ,but不能同时出现在一个句子里，只用其中之一。但though 可以与yet，still 同时出现在一个句子中。
例:Though Australia is very large ,but the population is quite small.
其他连词
01
连词 or
(1) or 用于连接并列的单词、词组、短语或句子,表示"或者"
(2) 并列结构中，or 用于否定句中,代替 and ,表示"和"的意思
(3) or用在选择疑问句中,灵活译为"还是"
(4) either...or... :意为“或者......或者......”，“要么......要么......”，连接主语时，谓语动词遵循就近原则
02
连词 neither...or...
neither...nor... 意为“既不......也不......”，连接主语时，谓语动词遵循就近原则
03
表示因果关系的连词有:
Because(因为)，So (所以)
because 和 so 不可同时用于一个句子。
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英语常用连词用法
1、while, when, as引导间状语句区别:①while引导状语句词必须持续性谓语词进行或状态词般while 些用用when代替等于 at the time that, during the time that例:Please keep quiet while (when) others are studying;② when除指段间外用指点间等于 at the time说when引间状语句谓语词终止性延续性主句句谓语般进行或完例:When I went into the lab, the teacher was doing an experiment.(when能换while)He often makes mistakes when he is speaking English.(when换while)③as与whenwhile通用强调边、边例:As (when, while) I was walking down the street, I noticed a police car in front of number 37. ④when引导状语句主语与主句主语致主、谓主语+系词结构主语系词省略例:When (he was) young, he worked for a rich man./ She’ll be here to give you help when (if it is) necessary. ⑤when代替if引导条件句意、假例:I’ll come when (if) I’m free.
2、before作连词般表示间意…前些句译显别扭试看句翻译:He almost knocked me down before he saw me.几乎我撞倒才看见我;Before I could get in a word he had measured me.我没及插已经给我量尺寸
3、till, until作介词式属连词引导间状语短语或状语句用于否定句结构not …until (till)主句谓语词延续与非延续皆意直…才…用于肯定句与延续性词连用表示…止例:They played volleyball until (till) it got dark./ They didn’t talk(延续性词)until (till) the interpreter(译员)came./ He didn’t go to bed(非延续性词)until (till) the his father came back.;until放句首till则行例:Until the last minute of the match we kept on playing./ Not until he finished his work did he go home.(倒装);till, until用于间句错误:We walked till the edge of the forest.(要用as far as或to)
4、because, since, as引导原状语注意使用区别:①原构句主要部,般用because ,because引导句往往放句末用why提问句定用because答例:He had to stay at home yesterday because he was ill.;②原已所知或句其部重要用as或 sincesince比as更式些assince引导句般放句例:As you are tired, you had better rest./ Since everyone is here, now let’s begin.
5、althoughthough引导让步状语句往往用注意区别:①although用于各种文体though则用于非式口语或书面语注意由although, though引导句主句能用but用副词yet, still例:Although/ Though it rained all the morning, they still went on working.(或yet they went on working)②though与even连用even though表示强调意即使能说even although例:Even though I didn’t understand a word, I dept smiling. ③though用作副词意用逗号与句although则能使用作连词例:It was a quiet party, I had a good time, though.
6、once作副词译曾经作连词译旦引导条件状语句相于if加强形式例:I don’t believe he was once a thief. (once副词)/ once Aristotle had made up his mind that heavy objects always fell faster than light objects, he taught it as a truth to his students. (once连词)
7、unless引导条件状语句等于if … not …例:He’ll accept the job unless the salary is too low. ( = He’ll accept the job if the salary is not too low.)
8、用as if引导式状语句及表语句根据情况要使用虚拟语气例:He talks as if he knew all about it. 用直陈语气例:It looks as if it is going to rain.
9、whether, if引导句用区别:①引导主语句、表语句或同位语句用whether用if例:Whether they will go to the Great Wall is not known./ The question is whether we can finish the task on time./ The question whether we will take part in the physics contest has not been decided. ②whether接定式if则例:I haven’t decided whether to leave or not. ③whether作介词宾语或置于句首表示强调if则例:Everything depends on whether we have enough money./ Whether he will come, I am not sure. ④whetherif均引导宾语句 whether引导宾语句般都肯定句if引导宾语句肯定否定(能用whether)例:Could you tell us whether/ if it rains in winter in Australia?/ I wonder if it doesn’t rain. ⑤引导宾语句whetherif与or not连用连用要注意or not位置般与 whether、if使用与whether合起使用能与if合起使用例:I don’t know whether/ if they will come or not./ I don’t know whether or not they will come. ⑥if用引导条件状语句译whether则行例:If you work hard, you are sure to succeed.
10、as作属连词引导种状语句①as引导间状语句意…例:As (he was) a young man, he was a storekeeper and later a postmaster./ He sang as he worked. ②as引导式状语句意象…例:We must do as the Party teaches us. ③as引导原状语句意由于例:As you are tired, you had better rest. ④as引导让步状语句意虽、尽管Child as he is, he can do it well. ( = Although he is a child, he can do it well.) 另外as做关系代词引导定语句:I have the same book as you.
连词and的几种用法
and在作为连词时有哪几种基本用法?我们最熟悉的肯定是and译为“和”、“并”、时的用法，此时，and用来连接语法作用相同的词、短语或句子，如:
Lucy and I go to swimming once a week.
我和露西每周游泳一次。
They teach us Chinese and we teach them English.
他们教我们汉语，我们教他们英语。
And还可以用来连接两个动词或动词词组表示动作先后发生 。此时and可译为“然后”，如:
Go along the street, and take the second turning on the left. 沿这条街走，然后在第二个路口向左拐。
在口语中，and常用在go, come, try等动词后，连接另一个动词，表示目的。此时and相当于to，不必译出。如:
Go and see! 去看看!
Come and have a rest. 来休息一下。
And这个单词虽然很常见，但是很少有同学能够按照表达含义或语法功能来对其进行准确的分类，有些同学还错误地认为这样一个小词并不重要，其实分门别类更有助于我们学习掌握，请大家务必重视and这个小小的连词。