高中英语主语从句全面讲解
高中英语知识点归纳主语从句与宾语从句

高中英语知识点归纳主语从句与宾语从句主语从句是指在复合句中作主语的从句,而宾语从句则是在复合句中充当宾语的从句。
它们是高中英语中比较重要的知识点,下面将对主语从句与宾语从句进行归纳。
1.主语从句(Subject Clauses)主语从句在句子中充当主语,常用连词有:that, whether, who, whom, whose, which等。
例子:- That he is a good student is known to all.(大家都知道他是一个好学生)- Whether he will come is uncertain.(他是否会来是不确定的)- Who will win the game remains unknown.(谁将会赢得比赛仍是未知的)在主语从句中,应注意以下几点:- 当主语从句要表达的是一种客观事实时,常用that作为引导词。
如:That he is a good student is known to all.- 当主语从句表达的是一种疑问或选择时,常用whether作为引导词。
如:Whether he will come is uncertain.用which做引导词。
如:Who will win the game remains unknown.- 在口语中,常常省略引导词that,直接使用主语从句作为主语。
如:It is important to learn English well.2.宾语从句(Object Clauses)宾语从句在复合句中充当宾语的角色,常用连词有:that, whether, if, what, who, whom, whose, which等。
例子:- She asked me where I was going.(她问我去哪儿)- He doesn't know if/whether he can pass the exam.(他不知道自己是否能通过考试)- Can you tell me what time it is now?(你能告诉我现在几点了吗)在宾语从句中,应注意以下几点:- 宾语从句通常放在及物动词和介词后面。
高中英语语法主语从句讲解

主语从句一、概述:在句子中起名词作用的各种从句统称为名词性从句。
根据它们在句中的语法作用,这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。
二.主语从句主要有四类:(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。
例如:That you will win the medal seems unlikely.That you are so indifferent bothers me.That she survived the accident is a miracle.(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。
注意:引导主语从句,不能用if,只能用whether。
例如:Whether we will hold a party in the open air tomorrow depends on the weather.Whether she is coming or not doesn’t matter too much.(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.例如:What you need is more practice.What I want to know is this.Whatever we do is to serve the people.注:whatever / whoever的功用whatever, whoever在主语从句中不含疑问意义。
它引导主语从句,并在从句中作主语、宾语、表语等。
whatever = anything that; whoever = anyone who。
高中英语主语从句讲析课件可修改全文

3. It is a pity that I missed the train.
4. It doesn’t matter whether he will come or not.
5. It seems that it is going to rain.
It’s likely/possible/important/necessary/clear that 很可能/重要的是…/必要的是…/很清楚… It+ be +名词+ that 从句 It’s no wonder that…并不奇怪/无疑
It’s a pity/a fact /a common knowledge (众所周知) / a common saying(俗话说)that It+ be + 不及物动词+ that从句 It seems/appears/happens that…显然、明显、碰巧
matter much.
if, whether都可表示“是否”, 但if不能引 导位于主句之前的主语从句,它可以引导 位于主句之后带有形式主语it的主语从句。
3. TWhhaatt the professor said is of great importance.
that引导主语从句时无词义。What the professor said表示“教授所说的”。
6. It happened that they didn’t know my address.
请你归纳 ?
T——h—a—t —a—s—t—o—r—m——is——c—o—m—i—n—g
is well reported
主语从句高考知识点总结

主语从句高考知识点总结主语从句是英语语法中非常重要的一部分,它在高考中经常被考查。
主语从句用来作为主句的主语,从句的谓语动词通常是单数形式。
这篇文章将对主语从句的用法进行总结和探讨,帮助同学们更好地掌握这一知识点。
主语从句在句子中起到了连接主句和从句的作用。
从句的引导词通常有以下几个:that、whether、what、who、which、whose、when、where以及how等。
在使用主语从句时,要注意根据句子的需要选择合适的引导词。
首先,我们来看一些常见的主语从句的句型。
一种常见的句型是"That + be动词",例如:"That he is coming is certain.",意思是“他来是确定的。
”另一种常见的句型是"It + be动词 + (形容词) + that...",例如:"It is important that we protect the environment.",意思是“保护环境是重要的。
”除了常见的句型外,主语从句还有其他几种形式。
一种形式是主语从句位于句首,例如:"What she said is true.",意思是“她说的是真的。
”另一种形式是使用“whether”来引导主语从句,例如:"Whether he will come or not is uncertain.",意思是“他是否会来是不确定的。
”在使用主语从句时,需要注意主语和谓语动词之间的一致性。
如果主语从句所引导的从句是一般现在时态,那么主句的谓语动词也应该使用一般现在时态。
同样,如果从句是一般过去时态,那么主句的谓语动词也应该使用一般过去时态。
例如:"It is important that he studies hard."应该改为"It is important that he study hard."。
(完整版)主语从句详解+例句

(完整版)主语从句详解+例句主语从句是复合句中的一个重要成分,由一个从句作为主语,起到句子中主语的作用。
本文将详细介绍主语从句的结构和用法,并提供一些例句进行说明。
1. 主语从句的结构主语从句由引导词和一个从句组成,引导词在句子中充当主语的角色。
常见的引导词有:- that- whether/if- who- whom- which- what- whoever- whatever主语从句的结构可以是以下几种形式:- 陈述句形式:[that + 陈述句]- 一般疑问句形式:[whether/if + 陈述句]- 特殊疑问句形式:[疑问词 + 陈述句]2. 主语从句的用法- 主语从句可以替代主句中的名词或名词短语作为主语,使句子更加简洁明了。
例如:- That he is late is unacceptable.(他迟到是不能接受的。
)- What you said surprised me.(你说的话让我很吃惊。
)- 主语从句常用于强调句型中,强调句型的结构为:[It + 系动词 + 主语从句 + 其他成分]。
例如:- It is important that we take action now.(我们现在采取行动是很重要的。
)- It doesn't matter what they think.(他们怎么想并不重要。
)3. 主语从句的例句- That he didn't show up was disappointing.(他没有露面是令人失望的。
)- Whether she will join us is still unknown.(她是否会加入我们还不知道。
)- Who will be the winner is yet to be determined.(谁将会是胜利者还有待确定。
)- It is surprising that they didn't invite him.(他们没有邀请他是令人惊讶的。
2023年高中英语语法精讲,主语从句详细讲解

2023年高中英语语法精讲—主语从句详细讲解主语从句结构及用法在句子中担当主语的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。
通常结构为“引导词 + 主语 + 谓语 + 其他成分"。
一. 概念:在句子中担当主语的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”。
二. 引导词:1. that引导eg. That you are coming to London is the best news I have heard this long time.2. whether引导eg. Whether they would come to conference was a question.3. 连接代词引导: who,whom, whose, what, which, whoever, whomever, whichever, whatevereg. Whoever is top from wins the game when two matched players meet.4. 连接副词引导: therefore, besides, otherwise, however, moreover, still, thus, meanwhileeg. How this happended is not clear to anyone.5. 关系代词型what引导三. 形式主语it:1. 对关系代词型what引导的主语从句,可以使用形式主语。
eg. It is clear enough what he meant.2. 如果句子是疑问句,则必须用带形式主语it的结构.eg. Is it true that all of us need to to conference?如果一个句子在复合句中充当一个主语,那么这个句子就是主语从句。
高考英语主语从句知识点

高考英语主语从句知识点主语从句是英语语法中的一个重要知识点,也是高考中经常考察的内容之一。
掌握主语从句的使用方法和注意事项,对于提高语法准确性和阅读理解能力都非常有帮助。
本文将介绍主语从句的定义、使用时的注意事项以及一些常见的主语从句的句型。
一、主语从句的定义主语从句是指在一个句子中充当主语的从句。
它通常由连词that, whether或if引导,也可以由关系代词what, who, which,whom等引导。
二、主语从句的使用注意事项1.主语从句的用法多样化,可以表示陈述、疑问、建议、要求等不同的意义。
在使用时需要根据具体语境进行选择。
2.如果主语从句谓语动词是不及物动词,需要用it作形式主语。
例如:It is important that we study hard.3.在表示是否时,通常用whether或if引导主语从句。
例如:Whether you go or not is up to you.4.在表示疑问句时,常用疑问词引导主语从句。
例如:What you said is not clear.5.当主语从句与主句的主语一致时,可以用it作形式主语。
例如:It's a pity that you missed the party.三、常见的主语从句句型1.由that引导的主语从句。
例如:That he is rich is well known.2.由wh-词引导的主语从句。
例如:What she said is true.3.由whether或if引导的主语从句。
例如:Whether he will come to the party remains to be seen.4.由it作形式主语的主语从句。
例如:It doesn't matter whether you come or not.5.句型:It is + adj. + that从句。
例如:It is important that we protect the environment.四、主语从句的练习题1. ______ you have any questions, please feel free to ask. (whether/if)2. ______ he will pass the exam is still unknown. (that)3. ______ are you going to give your presentation? (where)4. ______ I owe you an apology is obvious. (that)5. ______ he is doing now is to prepare for the final exam. (what)答案:1. Whether2. That3. Where4. That5. What通过以上介绍,我们了解了主语从句的定义、使用注意事项以及常见的句型。
高中英语主语从句

高中英语主语从句主语从句,在英语语法中,是一个句子作为主语,它可以是陈述句、疑问句或者是特殊疑问句。
这种从句在高考英语中占据了重要的地位,因此,理解和掌握主语从句的用法对于高中生来说至关重要。
我们要理解什么是主语从句。
主语从句就是一个句子在复合句中充当主语,例如:What he said is not true.在这个句子中,“What he said”就是一个主语从句。
主语从句有三种类型:陈述句、疑问句和特殊疑问句。
陈述句作为主语从句时,通常以that引导,例如:That he will come to the party is certain.疑问句作为主语从句时,通常以whether或what引导,例如:Whether he can come is still a question.特殊疑问句作为主语从句时,通常以who、what、which等引导,例如:Who will come is not clear.在理解了主语从句的基本概念和类型之后,我们还需要掌握如何正确使用主语从句。
使用主语从句时,需要注意以下几点:主语从句的引导词要使用正确;主语从句的时态要和主句保持一致;主语从句的语序要使用陈述句语序。
除了正确使用主语从句,我们还需要理解主语从句的省略情况。
在某些情况下,主语从句可以省略掉that,例如:It is certn (that) he will come.这种情况下,it是形式主语,真正的主语是that he will come。
高中英语主语从句是一个重要的语法知识点,需要我们熟练掌握并正确运用。
只有通过不断的练习和学习,我们才能在高考中取得优异的成绩。
(2)主语从句一般用什么引导词?引导词在从句中担任什么成分?(3)主语从句的时态有什么特殊之处?请举例说明。
(4)主语从句与宾语从句、表语从句有什么异同点?通过预习题,我们对主语从句有了初步的了解。
接下来,我们将深入学习主语从句的构成、用法以及与其他从句的区别。
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高中英语主语从句全面讲解语法——Noun clauses as the subject主语从句如果一个句子在复合句中充当一个主语, 那么这个句子就是主语从句。
①That he finished writing the composition in such a short time surprised us all.②What we need are good doctors.③Whom we must study for is a question of great importance.1.主语从句的连接词1).连接词: that, whether①.That he will win is certain.②.Whether he’ll join us in the discussion is of great importance.2).连接代词: who, what, which, whom , whose, whoever, whatever, whichever①.It is clear who is afraid of having a change in land ownership.②.What India needs is a law to make land ownership fairer.3).连接副词: when, where, why, how, how many, how much , how long, how soon, how often①When we’ll start tomorrow will be told soon.②Where we can buy oxen is something we need to find out.③Why he came here is not known.④How we can protect the grain from damp needs to be discussed.【连接词】1. that——2. whether——3. who ——4. what——5. which——6. when, where ——7. why, how——8. whoever、whatever、whichever可引导主语从句。
【小结】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, 但在连接代词what引导的主语从句后谓语动词的数要根据句意而定。
★为了防止句子头重脚轻,通常把形式主语it 放在主语位置,真正主语后置。
1. It is certain2. It is true3. It is very likely4. It is strange5. It is a pity6. It is still a mystery7. It is said 8. It seems【小结】1.以that 引出的主语从句,常以形式主语it引导, 结构为:It is +形容词/名词/某些动词ed + that 从句。
2.在有些that从句中要用虚拟语气 (should +do/should +have done)。
★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 +不及物动词+从句It seems that… 似乎…It happened that… 碰巧…It appears that… 似乎…(4) It +be+ 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…★“It” 作形式主语代替主语从句的常见句型举例①It’s + adj. + that / wh- clausee.g. It’s clear / natural / certain that clauseIt’s obvious that money doesn’t grow on trees.②It’s + p.p. + that / wh- clausee.g. It’s said / reported / known that clauseIt’s believed that he will come next week.③It ‘s + n. + that / wh- clause e.g. It’s a shame / an honour / good news that clauseIt’s still a question when we’ll have our meeting.④It + v. (n. / pron.) that /wh- clausee.g. It made us very happy that she was chosen. It appears that he forgot to sign the letter.★whether与if均为“是否”,但下列情况下只用whether :1. 引导主语从句并在句首——2. 引导表语从句——The question is3. whether从句作介词宾语——I’m not sure about4. 引导让步状语从句时——’ll have to do it.【注意事项】1. 主语从句位于句首时必须由连接词引导。
2. 主语从句后置时引导词that可省略。
3. 主语从句位于句首时,不能用if 引导。
4. 主语从句后置时, 可以用if引导。
练一练1. makes this shop different is that it offers more personal services.2. These wild flowers are so special I would do I can to save them.3. in the regulations that you should not tell people the passport of your e-mail account.4. It is pretty well understood5. made the school proud wasmore than 90% of the students had been admitted to key universities.6. It now appears they are in need of help.7.8. It is good news they will arrive in a few days.Use the words below to fill in the blanks1. ______ watch was lost is unknown.2. ________ you did is right.3. _________ we will go for an outing tomorrow remains unknown.4. ______ we need is time.5. ______ will be our monitor hasn't been decided yet.whether what who whose whatever.WhetherWhatWhateverWhoseWho上面的空大家都填对了吗?上面每个句子都出现了的主语从句,大家能找到吗?1. Whose watch was lost is unknown.2. Whatever you did is right.3. Whether we will go for an outingtomorrow remains unknown.4. What we need is time.5. Who will be our monitor hasn't beendecided yet.1. Whose watch was lost is unknown.2. Whatever you did is right.3. Whether we will go for an outingtomorrow remains unknown.4. What we need is time.5. Who will be our monitor hasn't been decided yet.2. 在有些that从句中要用虚拟语气(should +do/should +have done)。
他出生在何地还不知道。
2. 谁会赢得比赛还不知道。
3. 谁来都欢迎。
4. 那个人为什么被谋杀尚不知道。
Where he was born has not been found.Why the person was murdered is still unknown.Who will win the match is still unknown.Whoever comes is welcome.5. What the teacher said today was quite right.老师今天说的话是十分正确的。
6. That they are badly in need of help is quite clear.他们急需帮助,这是十分明显的。
7. 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。
8. Whatever was said here must be kept secret.这里说的话都应当保密。
9. Whoever makes mistakes must correct them.凡犯了错误的人都必须改正。
10. It is a pity that she has made such a mistake.她犯了这样一个错误, 真是遗憾。
11. It is believed that at least a score of buildings were damaged or destroyed.据信, 至少有二十座楼房遭到破坏或彻底毁掉。