1. 三大从句用法一大堆，要背吗
为您解答
看你是哪个年级的了。。
你要是初中的话，建议不要背那么多语回法，一个是初中老师有答时讲不清楚，一个是初中的话英语靠语感就可以
要是高中，那建议你背一下，再配一些题，像一本之类的语法书，高中学语法还是很管用的，分析句子成分啊，翻译啊，作文之类的语法都蛮重要
大学就更不用说了，语法必学的
希望能帮到您
2. 求初中英语各类从句的用法
英语的复合句包括并列句和主从句两种。其中并列句是两句地位完全相同的简单句用表示并列关系的连词连接而成（例如and，or等）。主从句虽然有两套主谓结构，但是其中一套是主要的，称为主句，另一套只是充当主句的某个成分，称为从句。英语从句分为宾语从句，定语从句，状语从句，主语从句，表语从句，同位语从句6种。
宾语从句和表语从句
宾语从句和表语从句是从句中较为简单的一种。这两种从句是以句子的形式代替了主句中的宾语或表语，也就是直接占据了谓语后宾语或表语的位置，比较明显。引导宾语从句或表语从句的引导词最常用的是that，以及关系代词what，which，who(whom),关系副词when，where，how，whether。
由于主从复合句中有两套主谓结构，因而要注意时态的搭配。时态搭配的原则是从句服从主句，但是可以根据情况灵活配置，不过主从句之间不出现时段断层。因而一般常见的配置组合为：
主句 现在时 过去时 将来时
从句 现在时，过去时，将来时 过去的时态 一般现在时
注：当从句的内容是客观真理时，无论主句是什么时态，从句永远用一般现在时，例：The teacher told the students that the light travels faster than the sound in the air.
定语从句
定语从句是从句充当定语的用法，引导词与时态搭配的规则与宾语从句相同。定语从句与宾语从句区分的要点是宾语从句充当主句的宾语，占据了主句中宾语的位置，而定语从句的主句结构完整，定语从句在引导词的引导下跟在被修饰的主句的主语或宾语（表语）之后，起修饰作用，而被修饰的词语称为先行词。例如：
①People don’t know who runs in the morning in the park everyday.人们不知道是谁每天早晨在公园里跑步。
②People don’t know the man who runs in the morning in the park everyday.人们不知道那个每天早晨在公园里跑步的人是谁。
在②中，主句部分People don’t know the man句子结构是完整的，the man是被从句修饰的成分，即先行词。
注意，that是引导短语从句的引导词中最灵活而且用法最多的，通常可以代替所有关系代词（which，what，who，whom），而且有几种情况必须使用that：A.先行词是不定代词时；B.先行词受形容词最高级修饰时；C.当先行词被any, few, little, no, all, much, some等词修饰时D.当先行词为序数词或被序数词所修饰时；E.当先行词被the very, the only, the last, the just, the same等修饰时；F.当先行词既包含人又包含物时当先行词是疑问代词who，which，what或主句以这些词开头时；G.当先行词为主句表语或关系代词为从句表语时。
以下两种情况一般只使用which：在“介词＋关系代词”结构中先行词为“those＋表事物的复数名词”时。
当先行词为时间，地点或方式名词时，就有是使用关系代词和关系副词的问题了。原则非常简单：如果从句主谓宾结构完整，就使用关系副词；如果从句主谓宾结构不完整，使用关系代词。例如:
①This is the place where they met each other for the first time.
这是他们第一次见面的地方。
②This is the place that they will never forgrt.
这是他们永远不会忘记的地方。
在①中，从句部分的主谓宾结构是完整的，因而主句中的“place”充当了从句的地点状语，所以使用了关系副词where；在②中从句中没有宾语，因而主句中的“place” 充当了从句的宾语，所以使用了关系代词that。
注意定语从句中有一类非限制性定语从句。非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如：
This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性）
The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）
2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如：
My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。
3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如：
He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。
Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。
说明：关系代词that和关系副词why不能引导非限制性定语从句。
状语从句
状语从句的种类最多，知识点比较零散，归纳之后有以下几种：
时间状语从句
引导词：when, as, while, as soon as, while, before, after, since, till, until, the minute, the moment, the second, every time, the day， the instant, immediately , directly, no sooner … than,hardly …when, scarcely … when
例：
I didn't realize how special my father was until I was 18.
While Tom was watching TV, his wife was reading.
No sooner had I arrived home than it began to rain.
Every time I take your advice, I get into trouble.
地点状语从句
引导词：where, wherever, anywhere, everywhere
Generally, air will be heavily polluted where there are factories.
Wherever you go, you should bring the mp3 player with you.
原因状语从句
引导词：because, since, as, since, seeing that, now that, in that, considering that, given that, considering that, in as much as, in so much as
Now that everybody has come, let's begin our clas.
Considering that he is no more than 10 years old, his height of 1.60 m is not normal.
目的状语从句
引导词：so that, in order that, lest, in case, for fear that， in the hope that, for the purpose that, to the end that
The boss asked his secretary to give him the letter so that he could send it out himself.
The instructor raised his voice that the students at the back could hear more clearly.
结果状语从句
引导词：so … that, so… that, such … that, such that, to the degree that, to the extent that, to such a degree that,
He got up so early that he caught the first train.
It's such a good chance that we must not miss it.
条件状语从句
引导词：if, unless, as/so long as, only if, providing/provided that, suppose that, in case that, on condition that
You will certainly succeed so long as you keep on trying.
Provided that there is no opposition, we shall call off the meeting.
让步状语从句
引导词：though, although, even if, even though, as(用在让步状语从句中 必须要倒装)，while ( 一般用在句首 )，no matter …， in spite of ，the fact that, while, whatever, whoever, wherever,whenever, however, whichever
Much as I respect him, I can't agree to his proposal.
No matter how hard he tried, she could not change her mind.
比较状语从句
引导词：as(同级比较), than(不同程度的比较), 特殊引导词：the more … the more … ; just as …， so…; A is to B what /as X is to Y; no … more than; not A so much as B
She is as bad-tempered as her mother.
The house is three times as big as ours.
The more you exercise, the healthier you will be.
Food is to men what oil is to machine. 食物之于人，犹如油之于机器。
方式状语从句
引导词：as, as if, how, the way
When in Rome, do as the Roman do.
She behaved as if she were the boss.
Sometimes we teach our children the way our parents have taught us.
应当注意的知识点有：
引导时间状语从句的连词
主要有when, while, as, by the time, before, after, since, till/until, as soon as等。其中when、while和as都可表示"当……时候",但用法有区别:
1) when意为"在……时;当……时",可表示"点时间"或"段时间",从句谓语可以 是终止性动词,也可以是延续性动词。例如: When I got home, he was having supper.
2) as意为"边……边……"或"与……同时",重在表示两个动作同时发生、伴随进行。as从句是终止性动词时,主句通常也必须是终止性动词。例如: They sang as they danced.
3) while只可表示"段时间",从句谓语只限于延续性动词。例如: While I was sleeping, my father came in.
引导原因状语从句的连词
原因状语从句一般由because, since, as, for引导. 注意as, because, since 和for的区别:
1) 如果原因是构成句子的最主要部分, 一般用because。because引导的从句一般不放在句子的开头。例如: I missed the train because I got up late.
注:对于以why开头的问句, 一般只能用because引导的从句来回答。
2) 如果原因已为人们所知, 或不如句子的其余部分重要, 就用as或since、since 比as稍微正式一些。as和since引导的从句一般放在句子的开头。例如:
As he was not well,I decided to go there without him.
Since this method doesn't work, let's try another.
3) for表示所说的理由是一种补充说明,因此,for引导的从句可以放在括号里,而
且for引导的从句一般不放在句子的开头。例如: I decided to stop and have lunch, for I was feeling quite hungry.
引导结果状语从句的连词
主要有so/such…that…,so that等。
1) so...that结构在某种情况下可以与enough to和too...to结构相互转换。例如:
She is so short that she can't reach the buttons of the lift.
=She is too short to reach the buttons of the lift.
2)so that也可以引导结果状语从句,意为"结果是;以致于"。例如: They missed the bus so that they were late for class.
注:so that也可引导目的状语从句, 此时可用to或in order to替换, 将其改为简单句。
例如: He got up early so that he could get to school on time.
=He got up early to get to school on time.
=In order to get to school on time,he got up early .
主语从句
主语从句主要有三类：
由连词that引导的主语从句。 例如：That you will win the medal seems unlikely.
你想获得奖牌看起来是不可能的。
用连接代词which或连接副词if, whether 引导的主语从句。 例如：
Which of them escaped from the prison is still a mystery.
他们哪一个是从监狱里逃跑的，仍然是个谜。
When they will come hasn’t been made pubic.
他们什么时候来还不知道。
Whether she is coming or not doesn’t matter too much.
她来不来都无关紧要。
用关系代词（what,whatever,who,whoerver）引导的主语从句。
主语从句可以直接放在主语位置上，也可以用it作形式主语， 而将从句放在句末（尤其是当谓语较短时）。
当what引导的主语从句表示“…的东西”时，一般不用it作形式主语。
错:It is a book what he wants.
对:What he wants is a book. 他想要的是本书。
如果带主语从句的句子是疑问式，则必须用it作形式主语的结构。
例如：Has it been settled who will be sent to carry out the task ?
谁将被派去执行这项任务决定了吗 ？
固定用法：It is +名词+从句；It is +形容词+从句；It is +过去分词+从句；It +不及物动词+从句(当“及物动词 + 宾语”较短时，也可用这种结构);It +某些固定结构+ 主语从句。
同位语从句
在复合句中用作同位语的从句叫同位语从句。它一般跟在某些名词后面，用以说明该名词表示的具体内容。如： I heard the news that our team had won．我听到了我们队获胜的消息。
可以跟同位语从句的名词通常有news，idea，fact，promise，question，doubt，thought，hope，message，suggestion，words（消息），possibility等。
英语中引导同位语从句的词有连词 that，whether，连接副词 how,when,where等。（注：if,which 不能引导同位语从句。）如：I have no idea when he will be back．我不知道他什么时候回来。
有时同位语从句可以不紧跟在说明的名词后面，而被别的词隔开。如：The thought came to him that maybe the enemy had fled the city． 他突然想起可能敌人已经逃出城了。
这是我教学中总结的，学生们反映还不错，有什么不明白的再问我。
3. 初中英语面试，哪些语法是常考点，会涉及到三大从句吗
词类常考名词,动词，代词，形容词，副词 介词。时态会考一般现在时现在进行时，一般过去时，现在完成时，一般将来时，现在进行时，过去进行时 以及被动语态。从句会考定语从句，宾语从句和状语从句。
4. 初中英语各种从句
在英语中，主要有三大从句，即名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）、形容词性从句（即定语从句）、副词性从句（即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等）。
以下是一些基本的从句的语法知识点
各种从句：
I. 定语从句。
1） 先行词是名词。
2） 定语从句跟在名词后。是修饰名词的。
3） 与中文顺序相反。
4） 定语从句的组成是：连词+主+谓+宾。
5） 连词在从句里可以作主语、宾语、状语等。
6） 当先行词的名词表示人时，后面的连词用who+v/(whom)+s+v/whose+N+s+v.
当先行词的名词表示物时，后面的连词用which/that ,whose.
7） 连词前可以有介词。
8） 不许用what
1. All the people who work on a newspaper must be able to work fast.
2. Corn is a useful plant which can be eaten by both people and animals.
3. I have a friend whose cousin is a tennis player.
4. The boy lived in a part of town where there were no schools.
5. During the hurricane, one of the tree branches broke the bed in which
the girl had been sleeping.
II. 名词从句。起名词作用。=名词
1. 主语从句。
1） 在主语位置上。
2） 组成：连词+主语+谓语+宾语
3） 连词不可省
4） 不许用if
When we’ll go to school is still a question.
2. 宾语从句。
1） 在宾语位置上。在动词后。
2） 组成：（连词）+主语+谓语+宾语
3）连词可省
The doctor asked the patient what he had had for lunch.
3. 表语从句。
1） 在表语位置上。在系/be动词后。
2） 组成：连词+主语+谓语+宾语
3）连词不可省
4）不许用if
He lost his key. The reason is that he was too careless.
4. 同位语从句。
1） 在名词后。说明名词的内容。
2） 组成：名词+[连词+主语+谓语+宾语]
3）连词不可省
4) 只用that, when, where, why。不用which.
5) 只有一些词才用。请看Unit17.
The news that our team won the game made us happy.
III. 状语从句。连词+主语+谓语+宾语
1. 时间状语从句。
When I was away, my son looked after the dog.
2. 地点状语从句。
Put the book where it is.
3. 原因状语从句。
He was late, because he didn’t catch the bus.
4. 条件状语从句。
If it’s fine, we’ll go to the park.
5. 让步状语从句。
Although I’m tired, I’m very happy.
6. 目的状语从句。
We got up early so that we could get there on time.
7. 结果状语从句.
I was so frightened that I couldn’t say a word.
5. 初中英语语法知识总结：从句
一 名词性从句:
1. 主要包括主语从句,宾语从句,表语从句和同位语从句. 一般由that 引起,也可由who, what, when, why, which, whom, whether, how 引起.
2. 主语从句很多情况下都可以放到句子后面,而用代词it作形式上的主语. :
3. 形式宾语
4. 由名词性关系代词whatever, whoever, whichever 等引起的宾语从句
5. whether and if 都能引导从句, 但用法有所不同. 当主语从句直接位于句首时,应用whether,而不用if. Whether 后能直接or not, 但if 不能.
Whether he will come or not is not known.
6. 在名词reason后的表语从句必须用that引导, 不可误用 because.
The reason why he is often late for class is that he has the bad habit of getting up late in the morning.
二: 定语从句
1. 引导定语从句的关系词有who, whom, whose, that, when, where, why and which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which.
2. 当引导定语从句的先行词前有all, any, no, little, much, very first 等词, 或先行词前为形容词最高级所修饰时,或先行词为all, anything, nothing, something, everything 时,从句的引导词只能用that.
3. as 可做引导词引导定语从句, 多和such, the same 连用. As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头.
4. 介词+which/whom/whose从句
5. 代/名+介词+which 从句
6. 同位语从句和定语从句
三 状语从句:
修饰主句中的动词, 形容词和副词, 通常有从属连词引导, 按其意义和作用可分为时间, 地点, 条件, 原因, 让步, 目的, 结果, 方式, 比较.等
1. 时间状语从句:
1) 常见连词有 after, as, before, once, since, till, (not)until, when, whenever(no matter when), while, as long as, as soon as etc.
2) no sooner…than, hardly(scarcely, barely)…when: 刚做…就….
3) 还有 immediately, directly, instantly, the moment, the minute, the instant, the second, every time etc
2. 地点状语从句: 一般用where or wherever 引导
3. 条件状语从句:真实条件从句:if, unless, so long as, provided that, supposing that, on condition that, in the event that, in case that etc
4. 原因状语从句: 从属连词有because, as ,since, for, now, that, in that, seeing that, considering that(鉴于,由于)
5. 让步状语从句:
1): even if, though, even though, while(尽管) no matter what/how/which, however, whatever, whichever, however etc.
2) 由as 引起的让步从句, 语气较强烈,被强调的词须放在句首.
3) whether…or,不管…或…
6. 结果状语从句: so that, so…that, such…that
7. 目的状语从句: so that, in order that, for fear that, lest, in case
8. 方式状语从句: as, just as, as if: 如同…一样
9. 比较状语从句:
1) as…as, not so/as…as
2) 比较级+than, so much/a lot more than
3) no more…than, not more…than, less…than
4) the more…the more
6. 初中英语从句都有哪些啊，有没有详细的归纳
1.主语从句
1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有：
*It is a fact\a pity\a question\good news that...
2.宾语从句
1）宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。in that(因为),except that(除了),but that(只是）已构成固定搭配，其他介词后一般不接that引导的宾语从句。
*I promised that I would change the situation.
3.表语从句
表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语从句除可用that,what,when,why,whether,how等引导外，还可由because,as if(though)等引导。that常可省略。如主句主语为reason,只能用that引导表语从句，不可用because.
The reason why so many people died there is that there were not enough food supplies.
4.同位语从句
同位语从句用于对前面出现的名词作进一步说明，一般用连词that引导，由于先行名词的意义不同，也可用whether,who,when,where,what,why,how等引导。常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有时由于谓语较短，将同位语从句位于谓语之后。
I had no idea how many books I could borrow at a time.
5.定语从句
定语从句所修饰的先行词可以是名词或代词，也可以是一个句子。定语从句通常位于先行词之后，由关系代词或关系副词引导。
The girl whose parents died in an accident is living with her grandmother.
7. 初中英语有哪几种从句具体的用法老师讲的太差了听不懂…
从句是相对于主句而言的，即它是从属于某一个主句，而不能单独作一个句子。在英语中主要有三大从句，即：
1. 名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）
2. 定语从句
3. 状语从句（包括时间、条件、结果、目的、原因、让步、地点、方式等）。
1）主语从句用作主语，如：
That the earth is round is true. 地球是圆的是真实的。
2）宾语从句用作宾语。如：
Do you know where he lives?
3）表语从句用作表语，如：
My opinion is that you should not go alone. 我的意见是你不应单独前往。
4）同位语从句用于解释说明前面的名词。如：
The fact that the earth is round is true. 地球是圆的的事实是真实的。（that从句用于解释说明the fact）
5）定语从句相当于一个形容词，用于修饰前面的名词。如：
The student who answered the question was John. 回答问题的学生是John.
6）状语从句相当于一个副词，如：
When it rains, I usually go to school by bus. 天下雨时，我通常坐公共汽车上学。（时间状语）
If he comes tomorrow, you will see him. 如果他明天来，你就可以看见他。（if 引导的条件状语从句，其结构为：if +状语从句，＋主句）。要注意在状语从句中有一个规则是“主将从现”，即主句是将来时，则从句要用一般现在时表示将来。
He returned home to learn his daughter had just been engaged.他回家后得知女儿刚刚订婚了。（结果状语，结果状语只是仅限于learn（得知），find（发现），see，hear，to be told（被告知），make（使得）等具有界限含义的动词。）
You must speak louder so that /in order that you can be heard by all. 你必须大声说话，才能让所有人听到你说话。（目的状语，可以由that, so that, in order that, lest, for fear that, in case等词引导。）
Since /As the weather is so bad, we have to delay our journey. 天气那么糟，旅行推迟了。 （原因状语从句，常用 because, since, as, for fear (恐怕), seeing that (既然) ，now that (=since), considering that (考虑到) 等引导。）
Though/Though he was worn out, (still) he kept on working. 虽然他已经精疲力竭了，但仍然继续工作。（让步状语从句，引导的连词主要有以下这些：though, although, as; even if, even though; whether...or...; no matter+疑问词，疑问词-ever.)
Where I live there are plenty of trees. 我住的地方树很多。（地点状语从句，通常由where, wherever 引导。）
As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。（方式状语从句通常由as, (just) as…so…, as if, as though引导。）
主句和从句的划分方法是相同的。句子的成分从谓语动词处来划分比较容易。谓语动词前面的部分是主语，后面常接宾语，修饰谓语动词的是状语，修饰主语、宾语的是定语，若谓语是系动词，则系动词后的部分是表语。如：
I am a teacher. 其中，I 是主语，am是谓语，a teacher 是表语。
He likes playing football very much. 其中，he是主语，likes是谓语，playing football是宾语，very much是状语。
8. 英语初中的从句有哪几种 用法是什么
名词性从句（在句中充当名词的作用），它分为主语从句，表语从句，宾语从句，和同位语从句。
引导词：
词性/词形/词义/作从句中的成分
连接词/if/是否/-
连接词/that/-/-
连接代词/who(ever)/（无论）谁[主格]/-
连接代词/whom（ever）/（无论）是谁[宾格]/主，表
连接代词/whose(ever)/（无论）谁的[所有格]/主，宾
连接代词/which(ever)/（无论）哪一个（些）/主，宾，表，定
连接代词/what（ever)/（无论）什么，……东西/主，宾，表，定
连接副词/when/什么时间/状
连接副词/where/什么地点/状
连接副词/how/怎么，如何/状
连接副词/why/为什么/状
★定语从句（在句中修饰名词，也叫先行词作用），它分为限制性定语从句和非限制性定语从句。
引导词：
词性/词形/先行词/充当从句成分
关系代词/who/人/主，宾表
关系代词/whose/人/宾
关系代词/which/物/主，宾，表
关系代词/that/人或物/主，宾，表
关系代词/as/人或物/主，宾，表
关系代词/whose(of
whom
或
of
which)/人或物/定
关系副词/when(=
in
等
+
which)/时间词/状
关系副词/where(=
in
等
+
which)/地点词/状
关系副词/how/方式词/状
关系副词/why(=
for
which)/reason/状
关系副词/that在口语中可代替关系副词/-/状
★状语从句（在句中起状语的作用），它分为时间状语从句,地点状语从句，原因状语从句，结果状语从句，目的状语从句，让步状语从句，方式状语从句，比较状语从句，条件状语从句，共九种。