怎样浅显易懂地解释英语各种从句的逻辑
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怎样浅显易懂地解释英语各种从句的逻辑？
联想派
（一）问题澄清：何谓从句
从题目的正文可以看出来题主问的是名词性从句、形容词性从句（定语从句）、副词性从句（状语从句）三类复杂句从句，但是从句的概念不止如此。
英语中的从句概念包括：
复合句（compound sentence），常称为并列句，指的是用连词连接多个简单句组成的句子。
复杂句（complex sentence），也称为从句、主从复合句，用代词、副词、连词把一个简单句作为另外一个简单句的从属成分的句子。
两点说明：
上面这两种是专业语法的说法，而一般我们说的复杂句其实指的是比较难比较复杂的句子，可能是简单句、复合句或者复合句。要学好语法，首先就要准确定义这些名词，不然会混，很多争论也是从此而来。
复合句和复杂句还可以融合为复合复杂句，也称为并列复杂句，不过理解了复合句和复杂句，就不用单独讨论。
虽然题主问的只是上面的第二种，即复杂句（complex sentence），但是无邀自答，把这两种一起讲了，因为这两种从句的根本规律是一体的。
（二）总起：从句的一般结构
从上面的复合句和复杂句的定义就可以看出来，从句都是两个句子连接起来，代词、副词、连词，都笼统地称为引导词，所以从句的一般结构是：
简单句1 + 引导词 + 简单句2
关键点在引导词上，分述如下：
复合句的引导词：连词
复杂句的引导词：代词、副词、连词
根据引导词能够连接的句子的完整性（即完整句子与不完整句句子），引导词可以分为两类：
代词 + 不完整句子（即SVtO缺少S或者缺少O）
副词/连词 + 完整句子（即SVO俱全或者SVi不需要O）
（三）复合句
复合句 = 简单句1 + 并列连词 + 简单句2
而并列连词又极其简单，即fanboys + and yet + and so，fanboys即下列连词的首字母缩写：
for: I'd better take an umbrella, for it is going to rain.
and: He is so handsome and the princess is willing to marry him.
nor: The city is not beautiful, nor is it clean.
but: I like action movies but she doesn’t like them.
or: Take the chance, or you will regret.
yet: She walked slowly into the hall and at once noticed that all the room doors were open, yet following her regular practice she had shut them before going out.
and yet: She walked slowly into the hall and at once noticed that all the room doors were open, and yet following her regular practice she had shut them before going out.
so: It is hard for energetic, quick-minded people to waste time, so they are often tempted to finish a job before setting out to keep an appointment.
and so: It is hard for energetic, quick-minded people to waste time, and so they are often tempted to finish a job before setting out to keep an appointment.
三点说明：
and yet和and so是可以合并的两个连词，其他连词只能用一个（比如and or就不对，and but也不对，当然and/or另当别论。
and therefore、and thus等并不是连词合用，因为therefore/thus是副词，所以在and therefore + 简单句2中，therefore只是副词做状语。
常见伪连词：
therefore
however
moreover/furthermore
nonetheless/nevertheless
notwithstanding
then
错误用法
句子1, however, 句子2.
正确用法
1）句子1. However, 句子2.
2）句子1; however, 句子2.
3）句子1. 句子2第一部分, however, 句子2剩余部分.
4）句子1. 句子2, however.
（四）复杂句
复杂句 = 主句 + 从句 = 简单句1 + 引导词 + 简单句2（划线部分即是从句）
复杂句分为三类、六种，上图：
（因为形容词性从句只有定语从句一种，副词性从句只有状语从句一种，所以大家习惯的叫法是：名词性从句、定语从句、状语从句，但是从今天起不要了哦，请专业起来哦hahah其实无所谓的）
4.1名词性从句
名词性从句有四类，上图：
名词性从句的一般规律是分两类：
that/whether/if + 完整句子
特殊疑问词的陈述语序
1）先讲主语/宾语/表语从句：
that/ whether/ if + 完整句子
（注意这里的that是连词）
That you are right is a lie.
I believe (that) you are right.
It is not that you lied to me; it is that you do not regret it at all now.
I don’t know whether/ if he is trustworthy.
特殊疑问句的陈述语
what: What he wants to tell us is not clear.
whatever: Whatever he does is not my concern.
which: It is still unknown which team will win the match.
whichever: I don’t care whichever team will win the match.
who: Who will win the match is still unknown.
whoever: Whoever leaves the room last ought to turn off the lights
whom: I don’t know whom he gave that ring to.
whomever: I don’t care whomever he gave that ring to.
where: Where the English evening will be held has not yet been announced.
wherever: Wherever the English evening will be held is not my business.
when: I hate it when they speak with their mouths full of food.（it是形式宾语）
whenever: Whenever they speak with their mouths full of food is a pain for me.
whose: Please tell me whose umbrella this is.
whosever: Whosever umbrella this is is not my business.
how: It is known to us how he became a writer.
however: However he became a writer is his own secret.
why: I still don’t understand why he chose to betray me.
2）再讲同位语从句：
同位语从句 = 抽象名词 + 主/宾/表从句 = 抽象名词 + 引导词 + 同位句
抽象名词概括同位句，同位句解释抽象名词
抽象名词：fact/ idea/ news/ information/ order/ belief/ advice/ suggestion
引导词that
（注意这里的that是连词）
The girls were surprised at the fact that ocean ships can sail up the Great Lakes.
The idea that you can do this work well without thinking is quite wrong.
There was a suggestion that Brown should be dropped from the team.
He grabbed his suitcase and gave the impression that he was boarding the Tokyo plane.
The thought came to him that maybe the enemy had fled the city.
引导词whether
The question whether we should call in a specialist was answered by the family doctor.
特殊疑问词引导词what/ who/ whom/ whose/ when/ where/ how/ why
I have no idea what size she wears.
The question who will take his place is still not clear.
We haven’t yet settled the question where we are going to spend our summer vacation.
4.2形容词性从句
即定语从句，引导词在国内的语法教育中常称为关系词，分两类：
关系代词that/ which/ who/ whom/ whose + 不完整句子
It’s the only one that I’ve left.
He is the man whom/ that I saw yesterday.
Is he the man who/that wants to see you?
They rushed over to help the man whose car had broken down.
关系副词when/ where/ why + 完整句子
There are occasions when (on which) one must yield.
Beijing is the place where (in which) I was born.
Is this the reason why (for which) he refused our offer?
4.3副词性从句
即状语从句，状语从句的引导词只有副词和连词，所以只能引导完整句子，一般按意义分为9类：
时间：When the dry desert ends, the green grass grows.
地点：Where there is a will, there is a way.
原因：Collecting provides relaxation for leisure hours, as just looking at one’s treasures is always a joy.
目的：Such a plan should be carried out so that the goal of education could be better met.（注意这里的that是连词）
结果：Youth is so wonderful that it is a crime to waste it.（注意这里的that是连词）
条件；If the economy still develops at present way, the environment will be getting worse and worse.
让步：Although advertisements are never without disadvantages, their advantages carry more weight.
比较：The more we study, the better we understand life. (The + 比较级…, the + 比较级…)
方式：If we cannot do as we would, we must do as we can.
（五）结论
去除上面所有的例子，可以看得出来从句，不论是复合句还是复杂句都是极其简单的，不过本人也是在英语专业的三年级才完全理解透彻，之前总是被老师给讲晕了，所以一个好老师是多么重要啊，比如我（hahah）。结论如下：
从句 = 复合句/复杂句
主句 + 从句 = 简单句1做主句 + 引导词 + 简单句2（划线部分即从句）
复合句 = 简单句1 + 并列连词 + 简单句2
并列连词只有七个：fanboys，and yet、and so可以合用
复杂句 = 简单句1 + 引导词 + 简单句2
代词引导词 + 不完整句子
副词/连词引导词 + 完整句子
名词性从句有两类：
that/whether/if + 完整句子
特殊疑问词的陈述语气
形容词行从句有两类：
关系代词 + 不完整句子
关系副词 + 完整句子
状语从句只有一类：副词/连词 + 完整句子
联想派
（一）问题澄清：何谓从句
从题目的正文可以看出来题主问的是名词性从句、形容词性从句（定语从句）、副词性从句（状语从句）三类复杂句从句，但是从句的概念不止如此。
英语中的从句概念包括：
复合句（compound sentence），常称为并列句，指的是用连词连接多个简单句组成的句子。
复杂句（complex sentence），也称为从句、主从复合句，用代词、副词、连词把一个简单句作为另外一个简单句的从属成分的句子。
两点说明：
上面这两种是专业语法的说法，而一般我们说的复杂句其实指的是比较难比较复杂的句子，可能是简单句、复合句或者复合句。要学好语法，首先就要准确定义这些名词，不然会混，很多争论也是从此而来。
复合句和复杂句还可以融合为复合复杂句，也称为并列复杂句，不过理解了复合句和复杂句，就不用单独讨论。
虽然题主问的只是上面的第二种，即复杂句（complex sentence），但是无邀自答，把这两种一起讲了，因为这两种从句的根本规律是一体的。
（二）总起：从句的一般结构
从上面的复合句和复杂句的定义就可以看出来，从句都是两个句子连接起来，代词、副词、连词，都笼统地称为引导词，所以从句的一般结构是：
简单句1 + 引导词 + 简单句2
关键点在引导词上，分述如下：
复合句的引导词：连词
复杂句的引导词：代词、副词、连词
根据引导词能够连接的句子的完整性（即完整句子与不完整句句子），引导词可以分为两类：
代词 + 不完整句子（即SVtO缺少S或者缺少O）
副词/连词 + 完整句子（即SVO俱全或者SVi不需要O）
（三）复合句
复合句 = 简单句1 + 并列连词 + 简单句2
而并列连词又极其简单，即fanboys + and yet + and so，fanboys即下列连词的首字母缩写：
for: I'd better take an umbrella, for it is going to rain.
and: He is so handsome and the princess is willing to marry him.
nor: The city is not beautiful, nor is it clean.
but: I like action movies but she doesn’t like them.
or: Take the chance, or you will regret.
yet: She walked slowly into the hall and at once noticed that all the room doors were open, yet following her regular practice she had shut them before going out.
and yet: She walked slowly into the hall and at once noticed that all the room doors were open, and yet following her regular practice she had shut them before going out.
so: It is hard for energetic, quick-minded people to waste time, so they are often tempted to finish a job before setting out to keep an appointment.
and so: It is hard for energetic, quick-minded people to waste time, and so they are often tempted to finish a job before setting out to keep an appointment.
三点说明：
and yet和and so是可以合并的两个连词，其他连词只能用一个（比如and or就不对，and but也不对，当然and/or另当别论。
and therefore、and thus等并不是连词合用，因为therefore/thus是副词，所以在and therefore + 简单句2中，therefore只是副词做状语。
常见伪连词：
therefore
however
moreover/furthermore
nonetheless/nevertheless
notwithstanding
then
错误用法
句子1, however, 句子2.
正确用法
1）句子1. However, 句子2.
2）句子1; however, 句子2.
3）句子1. 句子2第一部分, however, 句子2剩余部分.
4）句子1. 句子2, however.
（四）复杂句
复杂句 = 主句 + 从句 = 简单句1 + 引导词 + 简单句2（划线部分即是从句）
复杂句分为三类、六种，上图：
（因为形容词性从句只有定语从句一种，副词性从句只有状语从句一种，所以大家习惯的叫法是：名词性从句、定语从句、状语从句，但是从今天起不要了哦，请专业起来哦hahah其实无所谓的）
4.1名词性从句
名词性从句有四类，上图：
名词性从句的一般规律是分两类：
that/whether/if + 完整句子
特殊疑问词的陈述语序
1）先讲主语/宾语/表语从句：
that/ whether/ if + 完整句子
（注意这里的that是连词）
That you are right is a lie.
I believe (that) you are right.
It is not that you lied to me; it is that you do not regret it at all now.
I don’t know whether/ if he is trustworthy.
特殊疑问句的陈述语
what: What he wants to tell us is not clear.
whatever: Whatever he does is not my concern.
which: It is still unknown which team will win the match.
whichever: I don’t care whichever team will win the match.
who: Who will win the match is still unknown.
whoever: Whoever leaves the room last ought to turn off the lights
whom: I don’t know whom he gave that ring to.
whomever: I don’t care whomever he gave that ring to.
where: Where the English evening will be held has not yet been announced.
wherever: Wherever the English evening will be held is not my business.
when: I hate it when they speak with their mouths full of food.（it是形式宾语）
whenever: Whenever they speak with their mouths full of food is a pain for me.
whose: Please tell me whose umbrella this is.
whosever: Whosever umbrella this is is not my business.
how: It is known to us how he became a writer.
however: However he became a writer is his own secret.
why: I still don’t understand why he chose to betray me.
2）再讲同位语从句：
同位语从句 = 抽象名词 + 主/宾/表从句 = 抽象名词 + 引导词 + 同位句
抽象名词概括同位句，同位句解释抽象名词
抽象名词：fact/ idea/ news/ information/ order/ belief/ advice/ suggestion
引导词that
（注意这里的that是连词）
The girls were surprised at the fact that ocean ships can sail up the Great Lakes.
The idea that you can do this work well without thinking is quite wrong.
There was a suggestion that Brown should be dropped from the team.
He grabbed his suitcase and gave the impression that he was boarding the Tokyo plane.
The thought came to him that maybe the enemy had fled the city.
引导词whether
The question whether we should call in a specialist was answered by the family doctor.
特殊疑问词引导词what/ who/ whom/ whose/ when/ where/ how/ why
I have no idea what size she wears.
The question who will take his place is still not clear.
We haven’t yet settled the question where we are going to spend our summer vacation.
4.2形容词性从句
即定语从句，引导词在国内的语法教育中常称为关系词，分两类：
关系代词that/ which/ who/ whom/ whose + 不完整句子
It’s the only one that I’ve left.
He is the man whom/ that I saw yesterday.
Is he the man who/that wants to see you?
They rushed over to help the man whose car had broken down.
关系副词when/ where/ why + 完整句子
There are occasions when (on which) one must yield.
Beijing is the place where (in which) I was born.
Is this the reason why (for which) he refused our offer?
4.3副词性从句
即状语从句，状语从句的引导词只有副词和连词，所以只能引导完整句子，一般按意义分为9类：
时间：When the dry desert ends, the green grass grows.
地点：Where there is a will, there is a way.
原因：Collecting provides relaxation for leisure hours, as just looking at one’s treasures is always a joy.
目的：Such a plan should be carried out so that the goal of education could be better met.（注意这里的that是连词）
结果：Youth is so wonderful that it is a crime to waste it.（注意这里的that是连词）
条件；If the economy still develops at present way, the environment will be getting worse and worse.
让步：Although advertisements are never without disadvantages, their advantages carry more weight.
比较：The more we study, the better we understand life. (The + 比较级…, the + 比较级…)
方式：If we cannot do as we would, we must do as we can.
（五）结论
去除上面所有的例子，可以看得出来从句，不论是复合句还是复杂句都是极其简单的，不过本人也是在英语专业的三年级才完全理解透彻，之前总是被老师给讲晕了，所以一个好老师是多么重要啊，比如我（hahah）。结论如下：
从句 = 复合句/复杂句
主句 + 从句 = 简单句1做主句 + 引导词 + 简单句2（划线部分即从句）
复合句 = 简单句1 + 并列连词 + 简单句2
并列连词只有七个：fanboys，and yet、and so可以合用
复杂句 = 简单句1 + 引导词 + 简单句2
代词引导词 + 不完整句子
副词/连词引导词 + 完整句子
名词性从句有两类：
that/whether/if + 完整句子
特殊疑问词的陈述语气
形容词行从句有两类：
关系代词 + 不完整句子
关系副词 + 完整句子
状语从句只有一类：副词/连词 + 完整句子
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