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常用连词的用法辨析口诀连词是连接句子、短语或单词的词汇。
在英语写作中，使用恰当的连词可以准确地表达思想，使文章结构更加清晰。
然而，由于常用连词众多且用法各异，学习者往往容易混淆它们的区别。
为了帮助大家更好地理解和运用常见连词，我总结了以下辨析口诀：一、并列连词1. and: 表示并列、添加关系（正义相加）2. but: 表示转折、对比关系（前俩顾反）3. or: 表示选择、否定关系（左扑右无）4. so: 表示结果、因果关系（所以就圆）二、从属连词1. when: 表示时间关系（问来问去都是when）2. where: 表示地点关系（哪儿是where）3. because: 表示原因关系（拜壽给因）4. although: 表示让步关系（阿露虽目）以上就是并列和从属连词的一些基本用法辩析。
接下来我们将具体展开说明。
一、并列连词1. andand 是最常见也最简单的并列连词之一。
它用来连接相同或相似的成分，表示并列、添加关系。
例如：I like to read novels and watch movies in my free time.（我喜欢在空闲时间读小说和看电影）He is tall and handsome.（他又高又帅）She is intelligent and hardworking.（她既聪明又勤奋）2. butbut 用于连接两个对立、矛盾的意思，表示转折、对比关系。
例如：He is rich, but he is not happy.（他很富有，但不快乐）She studied hard, but she failed the exam.（她学习努力，但考试失败了）It was a challenging journey, but we made it to the top of the mountain.（这是一次充满挑战的旅程，但我们成功登上了山顶）3. oror 被用来表示选择、否定关系。
高考英语三大从句讲解+练习（附答案）【名词性从句】名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。
因此，名词性从句成分为主语从句、表语从句、宾语从句和同位从句。
（一）引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。
有词义，在从句中担任成分，如主语、表语、宾语、或定语等。
2、连接副词：when, where, why, how。
有词义，在从句中担任成分，作状语。
3、连接词：that, whether, if, as if。
that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。
1. 主语从句作句子主语的从句叫主语从句。
主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。
that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。
例如：What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下：（1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句（3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…注意：连词that, whether在从句中不担任句子成分，只起连接作用，不能省略。
在初中英语中，主要有三大从句，即宾语从句、定语从句、状语从句（包括时间、条件、结果、目的、原因、让步、地点、方式等）。
小编今天跟大家分享的就是这三个从句的主要语法点，赶快看起来吧！宾语从句一、定义在句子中起宾语作用的从句叫做宾语从句。
二、连接词that: I think that you can pass the exam.Whether/if: I don’t know what the word means.“Wh”: I don’t know what the word means.I don’t know where he found the book.只用whether的情况：1. 与or not连用：I don’t know whether it’s raining or not.2. 与动词不定式连用：He doesn’t know whether to accept the invitation.3. 连接词前有介词时：It depends on whether he is coming.三、时态1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主句是一般过去时态，从句用相应的过去的时态。
1）She said that she was a student.2）She said that she would fly to Japan in a week.3）She said that she had finished her homework already.3. 如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。
The teacher said that the earth goes round the sun.一、定义在复合句中修饰名词、代词的从句叫定语从句。
英语中常用的连词和从句连词是连接句子、短语或单词的重要工具，用于表达句子之间的关系和逻辑连接。
在英语写作中，正确运用连词和从句可以使文章结构更紧凑、逻辑更清晰。
本文将介绍英语中常用的连词和从句，以助于提升写作水平。
1. 并列连词（Coordinating Conjunctions）并列连词用于连接具有相同重要性或地位的句子、短语或单词。
常见的并列连词有：and、but、or、so等。
例如：- I like ice cream and I like cake.（我喜欢冰淇淋和蛋糕。
）- She is smart but lazy.（她聪明但懒惰。
）- You can choose tea or coffee.（你可以选择茶或咖啡。
）2. 从属连词（Subordinating Conjunctions）从属连词用于引导从句，从而将从句与主句连接起来。
从属连词常常用于表达因果关系、时间关系、条件关系等。
常见的从属连词有：because、when、if、although等。
例如：- She passed the exam because she studied hard.（她考试通过是因为她努力学习。
）- I will call you when I arrive at the airport.（我到达机场时会给你打电话。
）- If it rains, we will stay at home.（如果下雨，我们会呆在家里。
）3. 并列从句（Compound Sentences）并列从句是指两个或多个具有相同重要性的从句并列使用的情况。
使用并列连词或分号来连接这些从句。
例如：- She is tired, so she wants to take a rest.（她累了，所以她想休息一下。
）- I like to swim, but my sister prefers to run.（我喜欢游泳，但是我姐姐更喜欢跑步。
从句连接词的区别名词性从句的功能相当于名词词组。
在句中作主语、宾语、表语和同位语。
因此，主语从句、宾语从句、表语从句和同位语从句通称为名词性从句。
连接词有什么区别呢?下面就跟着店铺一起来看看吧。
名词性从句的连接词通常分为三类第一类连接词在名词性从句中，不充当任何成分，只起连接作用。
这类连接词有：that, if, whether, as if, as though等。
例如：When a pencil is partly in a glass of water, it looks as if it were broken. 当铅笔一部分放进水里时，看起来好像断了似的。
第二类连接词在名词性从句中，作主语、宾语、表语、宾语补足语、定语。
这类连接词有：what, whatever, who, whoever, whom, whomever, which, whichever, whose等。
这类连接词称之为连接代词。
例如：Here are the chairs. Tell me which are worth buying. 就是这些椅子。
告诉我买哪几把好。
第三类连接词在名词性从句中，作状语。
这类连接词有：when, whenever, where, wherever, how, however, why等。
这类连接词称之为连接副词。
例如：The students asked the teacher when the examination was going to be held. 学生们问老师什么时候举行考试。
名词性从句中常用连接词的区别what与that 的区别1. what引导名词性从句时，在从句中通常作主语或宾语，有时作表语或宾语补足语。
表示“……的东西、……的事情、……的话、……的时间、……的地方、……的人、所谓的……、……样子等”。
而that引导名词性从句时，在从句中不充当任何成分，也没有任何含义，只起连接作用。
初中英语重点语法三大从句总结宾语从句一、定义在句子中起宾语作用的从句叫做宾语从句。
二、连接词that: I think that you can pass the exam.Whether/if: I don't know what the word means.'Wh': I don't know what the word means.I don't know where he found the book.只用whether的情况：1. 与or not连用：I don't know whether it's raining or not.2.与动词不定式连用：He doesn't know whether to accept the invitation.3.连接词前有介词时：三、时态1.主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主句是一般过去时态，从句用相应的过去的时态。
1）She said that she was a student.2）She said that she would fly to Japan in a week.3）She said that she had finished her homework already.3.如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。
The teacher said that the earth goes round the sun.定语从句一、定义在复合句中修饰名词、代词的从句叫定语从句。
二、先行词先行词指人 who /that先行词指物 which/ that定语从句一般紧跟被修饰的名词或代词（即先行词）后三、关系代词关系代词代替先行词在句子中担当成分，所以从句中不可再出现其他代替先行词的代词四、翻译方法'….的'Whom: 先行词指人，则代替先行词在定语从句中充当宾语（包括介词的宾语）, 与who的区别是如果前面带介词则必须用whom1. This is the teacher whomwho we like best.2. I don't like the boy to whom you are talking.Whose : 指人或物，作定语，表示'…的'eg: Harry is the boy whose mother is our math teacher.关系代词只能 that 的特殊情况：1.先行词前有序数词修饰时：This is the first gift that my parents bought me.2.先行词前有形容词最高级修饰时：This is the most exciting film that I have ever seen.3. 先行词是不定代词something, anything等时.e.g. Is there anything that you want in this shop4. 先行词是人和物时, 用that.e.g. He talked about some writers and books that were unknown to us all.5. 先行词被all , little , the only , the very(就是，正是), the last 等词修饰时,只能用thate.g. This is the last place that I want to visit.6. 特殊疑问句以who 或which 开头，只能用that引导.Who is the girl that is making a speech on the platform当关系代词前使用介词时：物+介词+which ; 人+ 介词 + whom当关系代词前使用介词时：e.g. 1. This is the train by which we went to Beijing.2. This is the teacher to whom my mother is talking.状语从句一、定义在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。
一. 宾语从句object clause：一. 定义definition：在句子中起宾语作用的从句叫做宾语从句。
二. 连接词connections：that: I think that you can pass the exam.Whether/if: I don’t know what the word means.“Wh”: I don’t know what the word means.I don’t know where he found the book.只用whether的情况：1. 与or not连用：I don’t know whether it’s raining or not.2. 与动词不定式连用：He doesn’t know whether to accept the invitation.3. 连接词前有介词时：It depends on whether he is coming.三. 时态tenses:1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主句是一般过去时态，从句用相应的过去的时态。
1）She said that she was a student.2）She said that she would fly to Japan in a week.3）She said that she had finished her homework already.3. 如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。
The teacher said that the earth goes round the sun.二. 定语从句Attributive clause：1.定义：在复合句中修饰名词、代词的从句叫定语从句2.先行词指人who /that先行词指物which/ that3. 定语从句一般紧跟被修饰的名词或代词（即先行词）后4.关系代词代替先行词在句子中担当成分，所以从句中不可再出现其他代替先行词的代词5.翻译方法“…. 的”Eg.1. Yesterday we bought a book which is really hard to understand.2. The students who are from Maple Leaf School like learning English.Whom: 先行词指人，则代替先行词在定语从句中充当宾语（包括介词的宾语）, 与who的区别是如果前面带介词则必须用whom1.This is the teacher whom\who we like best.2. I don’t like the boy to whom you are talking.Whose : 指人或物，作定语，表示“…的”eg: Harry is the boy whose mother is our math teacher.关系代词只能that 的特殊情况:1.先行词前有序数词修饰时：This is the first gift that my parents bought me.2.先行词前有形容词最高级修饰时：This is the most exciting film that I have ever seen.3. 先行词是不定代词something, anything等时.e.g. Is there anything that you want in this shop4. 先行词是人和物时, 用that.e.g. He talked about some writers and books that were unknown to us all.5. 先行词被all , little , the only , the very(就是，正是), the last 等词修饰时,只能用thate.g. This is the last place that I want to visit.6. 特殊疑问句以who 或which 开头，只能用that引导.Who is the girl that is making a speech on the platform?当关系代词前使用介词时：物+介词+which ; 人+ 介词+ whom当关系代词前使用介词时：e.g. 1. This is the train by which we went to Beijing.2. This is the teacher to whom my mother is talking.三. 状语从句：Adverbial clauses定义：在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。
