常见主语从句的句型
主语从句句型结构及用法
主语从句句型结构及用法嘿，朋友们！今天咱就来唠唠“主语从句句型结构及用法”这个听起来有点玄乎的玩意儿。
你说这主语从句吧，就像是句子里的一个神秘小团体。
它专门干那出头露面的事儿，充当句子的大主角——主语！比如说，“What he said is true.”在这儿，“What he said”就是那个神秘小团体，也就是主语从句啦！咱就想啊，为啥要有主语从句这个东西呢？其实啊，有时候咱单靠一个简单的词儿当主语不够用啊！就好比咱出去打架，一个人拿着小木棍儿，哪够瞧啊，咱得找一群厉害的兄弟姐妹组成个帮派才行！主语从句就是这样，让句子更有气势，更加完整丰富。
它的用法呢，也挺有意思。
有时候你就觉得像是在玩拼图游戏。
你得找到合适的关联词，把这些小碎片拼成一个完整的大图。
比如说“Whether he will come or not depends on the weather.”这里的“Whether…or not”就是那个关键的拼图块儿。
不过呢，和这主语从句打交道也得小心，要不然容易掉坑里。
就像你走路不小心，噗通，掉坑里去了。
比如说有些关联词的用法得搞清楚，别用错了。
而且啊，有时候句子太长了，一不小心就把自己绕晕了，哎呀妈呀，都不知道句子在说啥了。
但是别怕！咱有招儿对付它。
多练习呗！就像咱打游戏，一开始总是被虐，多玩几次不就厉害了嘛。
多写几个句子，多读几遍，慢慢就有感觉了。
而且啊，学会了主语从句，咱说话写文章都感觉自己高大上了不少呢！别人还在用简单句子的时候，咱啪地扔出一个主语从句，那感觉，倍儿爽！就像咱出门骑个自行车，别人还在走路一样，有优越感呐！总之呢，主语从句虽然有点麻烦，但咱只要好好学，多练练就没问题。
它能让咱的语言变得更丰富多彩，更有魅力！所以，大家别害怕，大胆地和主语从句干一架吧！相信你们肯定能战胜它，让它成为咱语言的好帮手！加油哦！。
主语从句、表语从句
主语从句在句子中担当主语的是一个从句，这个从句就叫做主语从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
主语从句使用陈述语序，其通常结构为“引导词+ 主语+ 谓语+ 其他成分”；但当连接代词同时充当从句主语时，其结构为“连接代词+ 谓语+ 其他成分”。
一、主语从句的引导词主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导。
1. that引导例句：That you are coming to London is the best news I have heard this long time. 你将来伦敦是好久以来我听到的最好消息。
2. whether引导例句：Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
3. 连接代词引导例句：Whoever is top from wins the game when two matched players meet. 两强相争勇者胜。
4. 连接副词引导例句：How this happended is not clear to anyone. 这件事怎样发生的，谁也不清楚。
5. 关系代词型what引导例句：What struck me was that they have all suffered a lot. 给我很深印象的是他们都受过很多苦。
二、主语从句与形式主语it有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。
这分三种情况：(1) 对于以连词that引导的主语从句，通常用形式主语代主语从句：例句：That they should refuse to sign the petition required great courage. 他们拒绝在请愿书上签字这是需要很大勇气的。
(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：例句：Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
主语从句语法知识
5. It is ordered we should leave at
once.
that
6. Where he comes from are a
mystery.
is
x
7. What whether he likes the job is not clear.
8. Who he is and where he is from is
注意:
1）主语从句在句首时，必须由连接词引 导，不能省略这些连接词；但是如果用it 做形式主语，而把主语从句放在句末时， 从属连词that可以省略。
误：They should like each other is natural. 正：That they should like each other is
*__It_i_s_a__f_a_c_t _th_a_t_(这是事实)he cheated in the exam.
2) It is + adj. +从句 It’s certain that… 肯定… It is possible that... 很可能…… It is unlikely that... 不可能…… It is obvious that… 很明显… It is necessary \important \natural\... that… +(should) +do…
2.It was A he said disappointed me.
A.what ;that B.that; that C.what;what D.that;what
3. B we’ll go camping tomorrow depends on the
weAa.tIhfer. B.Whether C.That
主语从句知识点归纳总结
主语从句知识点归纳总结一、主语从句的引导词主语从句的引导词有两种情况，一种是以“疑问词”引导的主语从句，如 what, which, who, whom, whose, where, when, why, how；另一种是以“that” 引导的主语从句。
在口语中也可以用 whether 引导主语从句。
这两者的使用没有根本的区别。
二、主语从句的位置主语从句通常位于谓语动词之后，而在连接动词和宾语之间，有时还可用于某些固定句型的主语位置，如“It is+名词/形容词+that/who/whether…”，“There be 句型”等。
在复杂句中，主语从句通常位于主句之前三、主语从句需要注意的语法规则1. 主语从句在句中充当主语成分，主要用来说明主要动作的主体。
如：What he said is true.（他所说的是真的。
）2. 主语从句的谓语动词形式一般要和主句之间的逻辑关系保持一致，即主语从句的谓语动词的数和人称要和主句之间的主谓一致。
如：What he says is true.（他所说的是真的。
）3. 主语从句的谓语动词通常用单数形式，如其中的谓语动词用于表示整体和抽象概念的名词作主语。
表示数量的概念的名词作主语时，谓语动词用复数形式。
如：What she told me was very important.（她告诉我的事情很重要。
）4. 当主语从句中表示的内容是一个具体的个体时，“Who”引导的主语从句谓语动词的单复数形式要和先行词一致。
“Who”引导的主语从句用单数形式表示组织或公司时，谓语动词用单数形式。
表示具体的公司或组织名词作主语时，谓语动词要用单数形式。
如：The girl who is standing over there is my friend.（站在那边的那个女孩儿是我的朋友。
）The team that is winning a prize is from Beijing. （获奖的那个队是北京队。
主语从句
3) 由连接代词或连接副词以及whether引起的主语从句。 Whether they will sell the house is not yet decided.
他们是否卖掉这所房子还没有决定。
4) whatever, whoever，whichever也可引导主语从句。
Whatever was said here must be kept secret.
3. ____ the 2012 Olympic Games will be held in Beijing C is not known yet. A. Whenever B. If C. Whether D. That
4. ___we’ll go camping tomorrow depends on the weather. B
A. while B. that C. if D. for
9. There is no doubt ________. A A. that Mr. Hansen is in good health B. whether is Mr. Hansen healthy C. if Mr. Hansen's health was returning D. whether Mr. Hansen in health
境而定。
1.What you left are only several old books.
2.What you said is of great importance. 3.Whether he’ll come here is not clear.
C 1. ____ you don’t like him is none of my business.
高中英语语法专题名词性从句常见搭配
高中英语语法专题名词性从句常见搭配高中英语语法专题名词性从句主语从句宾语从句表语从句同位语从句作及物动词宾语作介词宾语that一般不省略可以省略一般不省略一般不省略一般不省略Whether/if（是否）放于句首时只用whether用whether/if均可，但有区别只用whether只用whether只用whether特殊疑问词注意语序要用陈述语序名词性关系从句注意语序要用陈述语序一、that 从句1、主语从句(1)that从句作主语时，常用it作形式主语，常见的句型有：It+be+形容词(obvious, true, natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc. )+that从句It+be+名词词组(no wonder, an honor, a good thing, a pity, no surprise, etc.)+that从句It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句(2)that可以省略，但that从句位于句首时，that不能省略。
2、宾语从句(1)常见的可以接that从句作宾语的动词有see, say, know, imagine, discover, believe, tell, show, think, consider, be sure, be afraid 等。
在可以接复合宾语的动词之后，如think, make, consider等，可以用it 作形式宾语。
(2)That从句一般不能充当介词宾语，偶尔可作except, in 的宾语。
3、表语从句(that不可省略)4、同位语从句连词that引导同位语从句时，应在某些抽象名词之后，如：fact, hope, desire, thought, suggestion, idea, news, problem, possibility等，对前面的名词起补充说明的作用，that在从句中不担当任何成分，不能省略。
常见的主语从句句型
常见的主语从句句型一、以it作形式主语的主语从句常见句型1. It + be + 形容词 + that从句- 例如：It is important that we should learn English well.（我们应该学好英语是很重要的。
）- 这里的形容词还可以是necessary（必要的）、obvious（明显的）、certain （确定的）等。
如It is necessary that you (should) arrive there on time.（你按时到达那里是必要的。
）2. It+ be+名词（短语）+ that从句- 例如：It is a pity that you missed the wonderful performance.（你错过了精彩的表演真是遗憾。
）- 常见的名词（短语）还有：a fact（事实）、a wonder（奇迹）、good news（好消息）等。
如It is a fact that the earth moves around the sun.（地球绕着太阳转是一个事实。
）3. It + be+ 过去分词+ that从句- 例如：It is said that he has gone abroad.（据说他已经出国了。
）- 类似的过去分词还有：reported（报道）、believed（相信）、known（知道）等。
如It is known that light travels faster than sound.（众所周知，光比声音传播得快。
）二、直接由连词引导的主语从句句型1. 连接代词引导的主语从句- 例如：What we need is more time.（我们所需要的是更多的时间。
）- 这里的连接代词what在从句中作宾语。
如果是Who will be our monitor hasn't been decided yet.（谁将成为我们的班长还没有决定。
主语从句的句型
12.W__h_e_t_h_e_r she is coming or not doesn’t matter too much.
6. _I_t_ is a fact that English is being accepted as an international language.
7.It worried her a bit _th_a_t_ her hair was turning grey.
8. The Foreign Minister said, “_I_t is our hope that the two sides will work towards peace.”
16. _W__h_o_ was responsible for the accident is not yet clear.
17. _W__h_e_n_/W__h__er_e_/_W__h_e_th_e_r_ they will have the sports meet is still a question.
18. It doesn’t matter _w_h__a_t _ she looks like.
高考链接
1. After Yang Liwei succeeded in circling the earth, ___ our astronauts desire to do is walking in space. (2004 上海) A. where B. what C. that D. how
答案是B。that 引导的主语从句。 that 在从句中不担任任何成分, 只起 连接作用.
主语从句语法详解
主语从句语法详解在英语中，主语从句是非常重要的一个语法知识，主语从句涉及的知识也非常多，需要我们耐心去理解，要不然容易混淆。
下面是小编给大家带来的英语语法主语从句_主语从句语法详解，以供大家参考，我们一起来看看吧!主语从句的概念与类型主语从句在复合句中作主句的主语,引导主语从句的词有从属连词that, whether以及连接代词who, what,which, whoever, whatever, whichever和连接副词when, where, why, how等.例如:That she was chosen made us very happy.她当选了使我们很高兴.What caused the accident is a completemystery.是什么导致了这次事故还完全是一个谜.Whether she will come or not is still a question.她是否来还是一个问题.Which team will win the match is stillunknown.哪个队会赢得这场比赛还不知道.Whoever comes to the party will receive apresent.参加聚会的每一个人都将收到一份礼物.When they will start has not been decidedyet.他们何时出发还没决定.注意:上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免"头重脚轻",常用it作形式主语,而把从句放在后面.例如:It is a pity that she has made such amistake.她犯了这样一个错误,真是遗憾.It depends on the climate whether they aregoing shopping today.他们是否今天去购物还得看天气情况.这样就构成了下面一些常用句型:1)It is + adj. / n. +从句It is a pity/shame that...遗憾的是……It is possible that...很可能……It is unlikely that...不可能……2)It +不及物动词+从句It seems/appears that...似乎……It happened that...碰巧……3)It + be +过去分词+从句It is said that...据说……It is known to all that...众所周知……It is reported that...据报道……It is believed that...据信……;人们相信……It is suggested that...有人建议……It must be pointed out that...必须指出……It has been proved that...已证明…….例如:It is believed that at least a score ofbuildings were damaged or destroyed.据信,至少有二十座楼房遭到破坏或彻底毁掉.It is suggested that the meeting should beput off.有人建议会议延期召开.It's reported that three people were killedin the accident and five were hurt badly.据报道,事故中三人丧生,五人重伤.It is known to all that Taiwan is aninseparable part of China.众所周知,台湾是中国不可分割的一部分.▼主语从句的语法<例句>It's certain that prices will go up.物价肯定要上涨的。
英语主语从句语法详解
如何正确使用英语主语从句一、主语从句的概念和特点主语从句是指在句子中充当主语的从句，即表示句子的主体或说话者的观点、想法、感受等的从句。
主语从句可以直接位于主语的位置，也可以由形式主语it代替，而将从句放在句子末尾。
主语从句要用陈述语序，即主语在前，谓语在后，不用倒装或省略。
主语从句后的谓语动词用第三人称单数，与从句的主语无关。
例如：What he said is true. 他说的是真的。
（主语从句直接位于主语的位置）It is true that he said so. 他说的是真的。
（主语从句由形式主语it代替，放在句子末尾）Whether he will come is not certain. 他是否会来还不确定。
（主语从句要用陈述语序，不用倒装）The fact that he is late worries me. 他迟到的事实让我担心。
（主语从句后的谓语动词用第三人称单数，与从句的主语无关）二、主语从句的引导词和用法主语从句通常由以下几类词引导：从属连词：that, whether等。
that通常只起连接作用，无实际意义，有时可以省略。
whether表示是否，后面可以跟or not。
例如：That he is honest is known to all. 他诚实是众所周知的。
（that可以省略）Whether he will come or not is not certain. 他是否会来还不确定。
（whether表示是否，后面跟or not）连接代词：who, whom, whose, which, what等。
连接代词在从句中充当主语、宾语、定语等成分，有实际意义，不能省略。
例如：Who will go with you is not decided yet. 谁将和你一起去还没有决定。
（who在从句中充当主语）What he needs is more practice. 他需要的是更多的练习。
高中英语三类主要形式主语句型
高中英语三类主要形式主语句型练师一、It代替主语从句的句型：（还可代替as if状语从句）1、It is clear. that-主语从句(obvious true possible certain uncertain)2、It is important that-（should）型虚拟主语从句(necessary right strange natural)3、It is n. that-主语从句(a fact, a pity, a shame, an honour，a question)4、It is said. that-主语从句(announced, believed, expected, hoped, decided, reported, shown)5、It is suggested. that-（should）型虚拟主语从句(ordered required advised)6、It doesn’t matter whether-主语从句（seem happen appear ）7、It looks as if状语从句( seems )二、It代替不定式to do sth.作主语的句型：1、It is easy to do sth.2、It is easy for sb to do sth. (necessary,difficult, hard, important, possible，pleasant)3、It is kind of sb to do sth. (stupid, clever, foolish, polite, impolite, silly, selfish, considerate)4、It is not a good habit to do sth.5、It take ( sb. )some time（money）to do sth. （cost）三、It代替doing sth作主语的句型1、It is no good doing sth (no use )2、It is not any good doing sth ( not any use )3、It’s a waste of time doing sth. (money)。
英语语法 主语从句5大用法以及句型知识点归纳梳理
英语语法主语从句5大用法以及句型知识点归纳梳理N0.1用法一、主语从句的引导词主语从句通常由连词that和whether.连接代词或连接副词以及关系代词型what引导。
1. that 弓 |导That he is still alive is a wonder.他还活着,真是奇迹。
That we shall be late is certain.我们要晚了，这是确定无疑的。
That he should have ignored the working class was natural. 他忽视工人阶级是很自然的。
That she is still alive is a consolation.她还活着是使人感到宽慰的。
That she became an artist may have been due to her father* s influence.她成为画家可能是受她父亲的影响。
That you are coming to London is the best news I have heard this long time.你将来伦敦是好久以来我听到的最好消4.介词+连接副词/连接代词/what从句:over what he had better do5.介词+连接副词/连接代词+不定式：on how to do this 其他类型的介词短语6.介词+介词短语:from across the street, until after dinner.介词+副词 :from below7.介词+复合结构 :with the light on英语经常用介词来表示词与词之间的关系.时间1)at表示在某一时间点:at 3 o' clock) in表示在某一时间段内的某一或某些点：in 2004in表示在某段时间的结束点:F II see you again in a week.2)during表示某一时间段内自始至终:during the first period3)on表示在某一day/date或其中的某一段:on Monday, on Sunday morningby表示不迟于某个时间：by now2.地点at表示在某处(而非它处):at school1)in表示在内部或某个范围内：in the officeon表示在上面与某平面接触：on the table2)outside表示在某个范围之外：outside world3)under表示在比某个位置低的地方或在某外表之下：under a chairby表示靠近或接近:by the window3.原因1)because of表示因为或以…为理由：because of my father for表示动作或活动的目的、目标或意图：for sale2)out of表示起源、来源或原因：out of duty.方式1) with表示以…方式：with skill) in 表示以某种方式:inFrench, in cash , in this way4.方法1)by 表示方法、手段：by the back road, by bus, by working hard on 表示运送方式:on a train, on foot2)in表示途径或材料：in oils三、介词的作用1 .作定语:The key to the door is missing.门上的钥匙丢了。
英语的主语从句
主语从句：在句子中担当主语的是一个从句，这个从句就叫做主语从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
主语从句使用陈述语序，其通常结构为“引导词+ 主语+ 谓语+ 其他成分”；但当连接代词同时充当从句主语时，其结构为“连接代词+ 谓语+ 其他成分”。
一、主语从句的引导词主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导。
1. that引导例句：That you are coming to London is the best news I have heard this long time. 你将来伦敦是好久以来我听到的最好消息。
2. whether引导例句：Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
3. 连接代词引导例句：Whoever is top from wins the game when two matched players meet. 两强相争勇者胜。
4. 连接副词引导例句：How this happended is not clear to anyone. 这件事怎样发生的，谁也不清楚。
5. 关系代词型what引导例句：What struck me was that they have all suffered a lot. 给我很深印象的是他们都受过很多苦。
二、主语从句与形式主语it有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。
这分三种情况：(1) 对于以连词that引导的主语从句，通常用形式主语代主语从句：例句：That they should refuse to sign the petition required great courage. 他们拒绝在请愿书上签字这是需要很大勇气的。
(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：例句：Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
主语从句
主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
1. It 作形式主语和it引导强调句的比较It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。
而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。
被强调部分指人时也可用who/whom。
例如：a) It is a pity that you didn’t go to see the film. 你不去看那场电影真可惜。
b) It doesn’t interest me whether you succeed or not.我对你成功与否不感兴趣。
c) It is in the morning that the murder took place.谋杀案是在早上发生的。
(强调句型)d) It is John that broke the window.是John打碎的窗户。
(强调句型)2. 用it 作形式主语的结构(1) It is + 名词+ 从句It is a fact that …事实是…It is an honor that …非常荣幸It is common knowledge that …是常识(2) It is + 形容词+ 从句It is natural that…很自然…It is strange that…奇怪的是…(3) It is + 不及物动词+ 从句It seems that…似乎…It happened that…碰巧…It appears that…似乎(4) It + 过去分词+ 从句It is reported that…据报道…It has been proved that…已证实…It is said that…据说…3. 主语从句不可位于句首的五种情况：(1)if 引导的主语从句不可居于复合句句首。
主语从句
主语从句（Subject Clause）一、概念1. 主语。
主语是句子陈述的对象，说明是谁或什么。
主语可以由名词、代词、形容词、分词、副词、数词、动词不定式（短语）、动名词和从句等来充当。
①My school is not far from my house. （名词做主语）主语②We like our school very much. （代词做主语）③Two add two is four. （数词做主语）④This is an article. (指示代词做主语)⑤Seeing is believing. （动名词做主语）⑥To see is to believe. (动词不定式做主语)⑦What I mean is to work harder. (从句做主语)2. 主语从句。
在句中充当主语的从句叫做主语从句。
①That he will come here on Wednesday is certain.他星期三会来，这是肯定的。
连接代词主语（从句）②Whether he will come here on Wednesday is not certain. 还没肯定他星期三是否会来。
连接副词主语（从句）③Where he comes from is unknown. 他从哪里来还不清楚。
④What’s done is done. 事已成定局。
★主语从句结构：连接代词/副词+句子二、主语从句的连接词⑴用从属连词that和whether引导。
That you will win the medal seems unlikely. 你想获得奖牌看起来是不可能的。
That she survived the accident is a miracle. 她在事故中幸免于难简直是奇迹。
Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
主语从句
主语从句作句子主语的从句叫主语从句。
主语从句通常由下列词引导：1从属连词that，whether 等；2连接代词what，who，whic h，whatever，w hoever，w hom 等；3 连接副词how，when，where，why 等。
一、从属连词：that，whether等.1、that 引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。
That he w ill w in is c ertain.他肯定会赢。
Whether he’ll c ome here isn’t c lear. 他是否会来这里还不清楚。
2、由that 引导的主语从句有时为了使句子结构平衡, 避免“头重脚轻”, 常用it 作形式主语, 而把从句放在后面。
例：1. That he w ill refuse this piec e of advic e is impossible.____________________________________3、这样就构成了下面一些常用句型:（1）: It is + n. +从句It is a pity/shame that... 遗憾的是……It is a surprise that…令人惊奇的是…（2）: It is + adj. +从句It’s certain that…肯定…It is possible that... 很可能……*（3）: It +不及物动词+从句It happened that... 碰巧……It occurred to me that…我突然想起…*________________(刚好)I came into the office at that time.（4）: It + be +过去分词+从句It is said that... 据说……It is believed that...据信……;人们相信……It is suggested that + (should）do... 建议……It must be admitted that…必须承认……*___________________(据报道)20 people were killed in the accident.*______________________(建议)we should eat more v egetable and do more exercise.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 nec essary (important, natural, strange, etc.) that … It is suggested (requested, proposed, desired, etc.) that…众所周知（1）It is known to us that二、连接代词who ，what ，which, whatev er, whichev er, whoev er ,whom(Who, whom, which, what可以和ever构成合成词，和what一样引导从句，ev er起到强调作用。
主语从句(初)--英语语法大全
英语主语从句（初）知识定位主语从句：在复合句中充当主语成分的句子叫做主语从句。
常规主语从句，即句子在复合句中充当一个主语。
主语从句的时态：不受主句的时态影响和限制。
例如：That he finished writing the composition in such a short time surprised us all. What we need is time.It is certain that he will win the match.(1) 引导主语从句连词有that, whether, who, what, whatever 等(2) 连词位于句首不能省略(3) 主语从句大多数情况下视为第三人称单数知识梳理主语从句引导词：1、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。
That you are so indifferent bothers me.你如此冷淡使我很烦恼。
That she survived the accident is a miracle.她在事故中幸免于难简直是奇迹。
2、用连接代词或连接副词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。
3、用关系代词引导的主语从句。
例如：What you need is more practice.你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
英语中总共有六大从句区分方法
英语中总共有六大从句,区分方法,用法,及例子如下：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...*It seems\appears\happened\has turned out that...*It is clear\important\likely\possible that...*It is said\reported\estimated\has been proved that...It is said that comic books create a connection between people of the same generation.It seems that the performance is very useful.2)what引导的主语从句表示“...的东西时”,一般不用it作形式主语.What we lack is experience.3)what,who,when,why,whether等词含有各自的疑问意义,但它们引导的主语从句,都用陈述语序.How the plan is to be carried out should be discussed again.I did know why I felt like crying.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.*All this is different from what American young people would say about friendship.*He is certain that watching so much television is not good for children.*This article is well-written except that it is a bit too long.2)宾语从句后如有宾补,要用形式宾语it来代替,而把宾语从句移至宾补之后.He has made it clear that he would not change his mind.3)在think,believe,suppose,expect等动词后的宾语从句中,如果谓语是否定的,一般将否定词移至主句谓语上,宾语从句则变成肯定形式.He didn't think that the money was well spent.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.Perhaps the most important thing to remember is that there is no one common type of life in America.The reason why so many people died there is that there were not enough food supplies.It looks as if successful international cultural communication will make the world smaller.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.She finally made the decision that she would join the fashion show.I had no idea how many books I could borrow at a time.The news came that their team had won the championship.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.*限制性定语从句限制性定语从句修饰先行词,对先行词起修饰作用,紧接先行词之后,无逗号,若省去,原句意思不完整.引导定语从句的关系代词有who,whom,whose,which,that等.who,whom,whose用于指人,whose有时也可指物,相当于of which；which用于指物；that既可指人也可指物,但只用于限制性定语从句中.关系代词除了引导定语从句,替代先行词外,还在从句中担任主语、宾语、定语等.The computers and cables which make up the Internet are owned by people and organizations. Those who live alone or who are sick may have trouble in getting close to other people.The girl whose parents died in an accident is living with her grandmother.1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时,只能用关系代词that引导从句. That is all that I've heard from him.He's the first person that I'm going to interview this afternoon.2)关系代词的省略在从句中作宾语的关系代词常可省略.关系代词紧跟介词,作介词宾语时不可用that,只可用which或whom引导从句,并且不可省略,但当介词位于宾语从句句末时,作为介词宾语的关系代词仍可用that,也可省略.This is one of those things with which we have to put up.This is one of those things (which\that) we have to put up with.3)引导定语从句的关系副词有when,where,why等.关系副词在从句中作状语,意义上相当于一个“介词+which”的结构.Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings.No one knows the reason why(=for which) he was so angry that day.5.定语从句*非限制性定语从句非限制性定语从句既可修饰先行词,也可修饰整个主句,起补充说明作用,与主句之间有逗号隔开,若省去,原句意思不受影响.不可用that引导非限制性定语从句.关系词不可省略. Every object has a gravitational pull,which is rather like magnetism.*“介词+which\whom\whose”引导的定语从句“介词+which\whom\whose”可引导限制性定语从句,也可引导非限制性定语从句,该结构中介词的选择取决于从句谓语动词的固定搭配,或先行词的习惯搭配.This is the computer on which he spent all his savingsIt is written by a person with whom we are all familiar.*as引导的定语从句as引导的定语从句主要用于“such...as”及“the same...as”的结构中,代替先行词是人或物的名词.as引导非限制性定语从句时,代替整个主句,从句可位于主句之前、之后或中间.These are not such problems as can be easily solved.(as代替先行词problems)As is mentioned above,no single company or group can control what happens on the Internet.(as 代替主语)6.状语从句*时间状语从句引导时间状语从句的从属连词和词组有：1）when,whenever,while,as,after,before,since,till,until,once等.We have learnt quite a lot about it since we came here.2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等.As soon as I sent an e-mail message,I received positive responses.The moment he heard the good news,he jumped with joy.*地点状语从句引导地点状语从句的连词是where,wherever.Wherever she went,she took her little daughter with her.*原因、结果和目的状语从句1）引导原因状语从句的从属连词有：because,as,since,now(that),seeing that,considering that,in that等.Considering that he is a freshman,we must say he is doing well.2)引导结果状语从句的连词有：so...that,such...that,so that,that,so等.Mickey Mouse is so attractive that the children are reluctant to leave.3)引导目的状语从句的连词有：so that,in order that,for fear that,lest等,从句常使用may,might,can,could,would等情态动词.We got up early this morning so that we could catch the first bus to the railway station.*条件和让步状语从句1）引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等.As long as you have the right equipment,you can use a telephone line to transmit computer data.2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however.)等.though,even if等引导状语从句可转换成含有as的部分倒装结构,具有强调意义.其结构为“形容词（副词、动词、名词）+as+主语+谓语”.No matter what you may say,I would not change my mind.Young as he is,he is quite experienced in this work.(=though he is young)Child as he is,he can speak English fluently.(=though he is a child)*方式状语从句引导方式状语从句的连词有as,just as,as if,as though等.as if,as though引导的状语从句中,谓语动词常用虚拟语气,表示与事实相反.The young man made the experiment just as the teacher had taught him.Everything went on as usual as if nothing had happened.。
主语从句_精品文档
主语从句一、定义: 在句子中担当主语的是一个从句, 这个从句就叫做主语从句。
通常放在主句谓语动词之前或由形式主语it代替, 而本身放在句子末尾。
二、引导词:（1）由连词that引导的主语从句:引导词that无含义,在句中不做成分,不可以省。
That you will win the medal seems unlikely.你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.你如此冷淡使我很烦恼。
That she survived the accident is a miracle.她在事故中幸免于难简直是奇迹。
That she was chosen made us very happy.她当选了使我们很高兴。
That they should refuse to sign the petition required great courage.他们拒绝在请愿书上签字这是需要很大勇气的。
（2）用连词whether 引导的主语从句:whether有含义(是否),在句中不做成分,不可以省。
Whether she is coming or not doesn’t matter too much.她来不来都无关紧要。
Whether they would support us was a problem.他们是否会支持我们还是一个问题。
Whether we will go for an outing tomorrow remains unknown.（3）用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中, 其连接代词在句中起名词性作用, 担当一定成分).What you need is more practice.你所需要的是更多的训练。
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常见主语从句的句型
一、It is + 过去分词 + that 从句
1. It is reported that… ________________
2. It is believed that… ________________
3. It is generally thought that… ______________
4. It should be noted that… ______________
5. It has been found that… ______________
6. It must be pointed out that… _______________
e.g. _______________________________________________________
二、It is + 形容词 + that 从句
1. It is clear that… ____________
2. It is possible that… _____________
3. It is likely that… ______________
4. It is natural that… ______________
5. It is certain that…. ________________
6. It is strange that…. ________________
7. It is fortunate that… _________________
8. It is necessary that… ________________
e.g.______________________________________________________
三、It is + 名词短语 + that 从句
1. It is a pity that… __________________
2. It is a fact that… ________________
3. It is good news that… _______________
4. It is a good thing that… _______________
5. It is no wonder that… _________________
6. It is a shame that… _________________
7. It is an honor that… _________________
8. It is common knowledge that… _________________
9. It is my belief that… ________________
10. It is a miracle that… __________________
e.g. _______________________________________________________
四、It is + vi. + that从句
1. It seems that… _________________
2. It happens that… _________________
3. It turns out that… _________________
4. It comes about that… __________________
e.g. _______________________________________________________
五、其它结构
1. It occurs to sb. that… _________________
2. It makes no difference that… _______________
3. It doesn’t need to be bothered that… ___________________
e.g. _______________________________________________________。