(完整版)高中英语语法总结-名词性从句(2)
高中英语教资语法点-从句
名词性从句 Noun clause（包括主语从句、宾语从句、表语从句和同位语从句）定义：A noun clause is a dependent clause that acts as a noun in a sentence. Noun clauses will contain a subject and a verb, but they cannot stand alone in a sentence. It must always be paired with a main clause.1.主语从句 subjective clause定义：A noun clause is a clause that plays the role of a noun. We use it as subject placeholder.结构：(1)主语从句（subject clause）+谓语（predicate）例句：what she said is right.(2)It 形式主语（formal subject）+谓语（predicate）+主语从句例句：It is important to arrive on time.2.宾语从句 objective clause定义：objective clause is clause that acts as an object in a sentence. It often follows a verb. 结构：{subject} + {verb} +(that可省略)+ {object clause}例句：I know (that) he is lying.I didn’t realize (that) I was late.3.表语从句 predicative clause定义：A predicative clause is a clause that follows a linking verb（系动词）and describes the subject of the sentence. It may be introduced by conjunctions such as that, whether, as, because, A predicative clause may be introduced by conjunctions（连词）, such as that, whether, as, as if, because, or connectives (连接词). Connectives many be conjunctive pronouns (连接代词)(who, whom, what, whose, which, whoever, whatever) or conjunctive adverbs (连接副词) (where, wherever, when, whenever, how and why).结构：Subject+ linking verb+ predicative clause例句：The regulation was that the first examination should be done in writing.Our proposal is that you should join in.Their suggestion was that no one should interfere.注：if不能引导表语从句。
高中英语知识点归纳名词性从句的特殊用法与考点
高中英语知识点归纳名词性从句的特殊用法与考点高中英语知识点归纳：名词性从句的特殊用法与考点介绍：名词性从句是英语中的一个重要语法要点，它作为一个句子的成分在句中起到名词的作用。
名词性从句的特殊用法及考点在高中的英语学习中经常出现，掌握这些知识点对于提高学生的语言表达能力和理解能力至关重要。
一、名词性从句的特殊用法：1. 作主语：名词性从句可以作为主语出现在句子中，常常使用的引导词是“that”或者是连接代词“wh-”引导的从句。
例如：（1）That he is coming is good news.（2）Whether we will go camping is still undecided.2. 作宾语：名词性从句可以作为及物动词的宾语出现在句子中，常使用的引导词有“that”和连接代词“wh-”。
例如：（1）I believe that you can do it.（2）He asked me how to solve the problem.3. 作表语：名词性从句可以作为句子的表语出现，通常使用引导词“that”或者是连接代词“wh-”。
例如：（1）The truth is that she loves you.（2）The question is whether we should trust him or not.4. 作补语：名词性从句可以作为一些特定动词的补语出现在句子中，常用的引导词有“that”和连接代词“wh-”。
例如：（1）I consider it necessary that we take action.（2）We all hope that he can win the game.5. 作定语：名词性从句可以作为定语修饰一个名词或代词，通常使用的引导词是连接代词“wh-”。
例如：（1）I have no idea which book to choose.（2）The person who told me the news is my best friend.二、名词性从句的考点：1. 名词性从句的语序：名词性从句的语序要遵循主从结构，通常是由从句引导词引导，跟在主句之后。
高中英语语法：名词性从句知识汇总
高中英语语法：名词性从句知识汇总在复合句中具有名词的性质的作主语、表语、同位语、宾语的从句叫名词性从句。
因此，我们把主语从句、表语从句、同位语从句和宾语从句这四种从句统称为名词性从句。
当名词性从句要采用陈述句语序。
由一个含疑问意义的连词引起时，必须将该连词放在名词性从句的开头，且该从句语序不能倒装。
一、引导名词性从句的关联词引导名词性从句的关联词大致相同，它们分别是：连词：that, whether, if；关系代词：who, what, which , whom, whose, whatever, whoever, whomever, whichever；关系副词：when, where, how, why, however, whenever, wherever。
引导从句时一般不用逗号和主句分开。
连词that在从句中不作成分，不含疑问意义；而wh-连词在从句中作成分，且含有疑问意义；或what/where从句相当于一个名词后加一个定语从句。
It worried her a bit that her hair was turning grey.她的头发在变白令她有点担忧。
（that在从句中只起引导词作用，不作成分）What caused the accident is still a complete mystery.事故发生的原因仍然是个不解之谜。
（What在从句中作主语）2、that与whether引导名词性从句的区别。
（1）动词doubt表示“怀疑、不知道”解时，肯定句接whether引导的宾语从句；否定句don’t doubt和疑问句Do you doubt要接that引导的从句。
I don’t doubt that he will come soon.我不怀疑他不久会来。
（此处不用whether）Can you doubt that he will win?你怀疑他会赢吗？（此处不用whether）比较：doubt表示“不信”解时，表示强烈的不相信时，在陈述句中可接that从句。
高中英语2024届高考名词性从句知识分类讲解(主语从句+宾语从句+表语从句+同位语从句)
高考英语名词性从句知识讲解名词性从句是指在复合句中起名词作用的句子，功能相当于名词词组。
名词性从句在复合句中能作主语、宾语、表语、同位语等，根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。
一、主语从句【定义】在复合句中，作主语的句子称为主语从句。
常见的连接词：（连接词在句中不能省略）that, whether, who, what, whatever, whoever, where, when, why, how等。
【用法】1.连接词 that 引导That we should learn English well is very important.主语从句中 we should learn English well句子完整，不缺成分，用that引导，that 不能省连接词whether，if 引导whether 引导的主语从句可放句首，也可放句中，表“是否”if 引导的主语从句只能引导动词后的宾语Whether I will go or not depend on the weather.It remains to be seen whether / if they can finish the task in time.2.连接代词what, who, which, whose, whatever, whichever，whoever等引导What matters most is your attitude.3.连接副词when，where，why，how等引导How he made it is still unknown.4.it作形式主语为了避免句子头重脚轻，通常把形式主语it放在句首，真正的主语放在句子后面。
常见句型：(1) It is + n.+ that + 句子It is +（a pity / a shame / a fact …）+ that ...(2) It is + adj.+ that + 句子It is +（true / clear / important …）+ that ...(3) It is + 过去分词 + that + 句子It is+ said / announced / expected / believed / hoped… + that ...(4) It seems /appears / happens / turned out that + 句子(5) It hit sb./occurred to sb.that + 句子二、宾语从句【定义】在复合句中，作宾语的句子称为宾语从句。
英语语法总结精选全文完整版
可编辑修改精选全文完整版高中英语语法总结一、 从句1、 名词性从句（1） 主语从句+谓语+宾语主语从句放置在主句中的主语部分)注意：whether …or notWhether（2）主语+谓语+宾语从句(3)主语表语从句(4) 一般为主语+谓语+宾语+同位语从句 （或主语+同位语从句+谓语+宾语）般常用），whether ，how,when,where 。
能跟that 引导的同位语从句的名词有：表信息和消息的名词（news 、information 、message 、report 、rumour 、evidence ）表观点、想法和信念的名词（fact 、idea 、belief 、hope 、opinion 、knowledge ）表态度和决定的名词（understanding 、conclusion 、impression 、doubt 、illusion 、possibility 、thought ）2、 定语从句(1)as 在定语从句中的用法：so …as\such …as\the same …as 等可引导从句；在非限制性定语从句中，as 可以直接指代前面的整个句子。
（3） that 引导的定语从句和同位语从句的区别:同位语从句对先行词进行解释说明，引导的同位语从句是完整的句子，一般先行词只能是表意念、态度等抽象名词；而定语从句是不完整的句子，that 替代先行词。
Eg ：同位语从句)定语从句)注意：除以上的状语从句，还有条件状语从句、地点状语从句、结果状语从句、比较状语从句等。
二、 非谓语动词1.doing 一般表正在做某事；而to do 一般表将来将要发生的事情2.不定式和动名词可以做主语、宾语、宾补、定语，其否定式实在前面加not或者never3.不定式和动名词做宾补和定语时有如下形式：（1）主语+谓语+宾语+不定式(表示主语施动于宾语，不定式与宾语呈主动，与主语无关，有表示发生或者未发生)（2）主语+谓语+宾语+动名词（表示动名词与宾语呈主动，与主语无关，且表示正在发生的事情），动名词（表示动名词与主语呈主动，且表示正在发生的事情）三、情态动词Must表肯定推测，can可表否定推测以及疑问推测，may表可能性推测；四、强调句(1)强调谓语动词，直接用助动词do、does、did+动原(2)强调其他，就用强调句型，强调人时可采用that或者who，强调其他部分，均采用that（强调句型：it is/was +强调部分+that…）五、虚拟语气（1）情态动词的虚拟语气：情态动词+have done表示对过去的事情进行虚拟，指本应该做什么而没有做情态动词+not+have+done指没必要做某事，而做了某事。
牛津高中英语模块三Unit1_语法讲解和训练__名词性从句 2
模块三Unit1 语法讲解和训练名词性从句一、概述在句子中起名词作用的从句称为名词性从句。
名词性从句包括主语从句，宾语从句、表语从句和同位语从句。
二、名词性从句的引导词1、连接代词：who, whom, whose, what, which, whoever, whatever等2、连接副词：when, where, why, how等3、从属连词: that, whether, if, as if, because (as if, because 只引导表语从句)连接代词和连接副词在句中不再是疑问词，因而从句中用陈述语序。
三、用法详解（一）主语从句1、主语从句用连接代词、连接副词和从属连词that, whether引导。
that不可省略。
That you don’t like him has nothing to do with me.Whether John can do the experiment remains a question.Who will be sent abroad to further his studies is not announced.What surprised me most was that such a little girl can play the violin so well.2、当主语过长时，常常用it作形式主语，而把真正的主语从句放在主句后面。
常用句型有：1)It +be +形容词（true, possible, certain, likely, surprising, strange, important…）+ that从句It’s certain that she will do well in the exam.It’s likely that he will tell me everything about that night.2)It +be +名词词组（no wonder, an honor, a pity, high time等）+that 从句It’s a pity that he can’t come.It’s high time that you turned in your homework.3)It +be +过去分词（said, reported, expected, supposed等）+that 从句It’s said that he is quite self-confident.It’s reported that a letter from the university has reached him.4)It +seem/ happen/look as if等+that从句tIt seems that Alice is not coming.It happened that I was a witness to the accident.5)It +doesn’t matt er(make no difference)+wh-It doesn’t matter whether you know my name or not.It makes no difference to me where we shall have the meeting.（二）宾语从句1、宾语从句用连接代词、连接副词和从属连词that, whether, if引导。
[5] 英语语法：名词性从句(二)
![[5] 英语语法：名词性从句(二)](https://img.taocdn.com/s3/m/df1ce454336c1eb91a375d80.png)
名词性从句1主系表句型----- be （连系动词do）2、主谓宾----- do（vt）3、主谓----- do(vi)----(不及物动词)4、主谓宾补----do(vt)5、主谓宾宾---do(vt) 记双宾语的动词一定要记。
6、There be (不及物动词do)--------be (不及物动词)宾语从句定义：在主谓宾句型的宾语的位置上把做为名词的宾语扩展成一个be句型或者do句型。
可以用下列公式进行表示：主语+谓语+从句。
宾语从句的连词①that ,②whether(or not)或if;③which(whichever), who(whoever)，whom(whomever) ，whose(whosever)，what(whatever);④when(whenever)，where(wherever)，why，how(however); ⑤how many, how much, how long, how often，how soon宾语从句的形式：1、主谓宾句型的宾语从句:做为名词的宾语扩展成一个be句型或者do句型。
He knows the newsHe knows that the teacher is in classroom2, 主谓宾宾---do(vt) 句型的宾语从句，把直接宾语变为一个be或do句型。
He tells me the newsHe tells the news to meHe tells me that she is a teacherHe tells that she is a teacher to me3、主谓宾补句型的宾语从句需要it来做形式宾语I find Chinese important主谓宾补I find that we make a quick decision about this matter important主谓宾语从句补I find it important that we make a quick decision about this matter主谓形式宾语补宾语从句I think it necessary that we take plenty of hot water every day .我认为每天多喝开水是有必要的.I feel it a pity that I haven’t been to the get-together.我没去聚会,感觉非常遗憾.I have made it a rule that I keep diaries.我每天写日记成了习惯.4、宾语从句的省略形式：某些形容词后面可以带宾语从句，其形式为sb+be+形容词+that宾语从句：这一类形容词通常是表示人物的心理，情感等状态的形容词如：sure,certain,glad,please,happy,sorry,afraid,satisfied,surpriseda. I am glad (that) you helped me.b、I am sure (that) you can pass the exam.表语从句同样的道理，如果在主系表句型表语的位置上把表语变成一个be句型或者do句型，则称为表语从句。
高中英语语法——名词性从句_2
表语 同位语
名词性从句的定义及种类 1. 定义: 在句子中起名词作用的各种从句，统称为名词性从句。 2. 种类: 根据它们在句中所充当的句子成分，可以分为主语从 句、宾语从句、表语从句和同位语从句。
请判断以下哪几句为名词性从句
1.Whether we will go for an outing tomorrow remains unknown. 主语从句 2.The question is when he can arrive at the hotel. 表语从句 3.It was Mary that helped me solve the problem. 强调句 4.Whoever breaks the law will be punished. 主语从句
1. 从属连词: that, if, whether
that: 无词义、不充当从句中的成分，引导第一个宾语从句可省略。 if: 表是否，不充当从句中的成分，引导宾语从句，不可省略。 whether: 表是否，不充当从句中的成分，引导名词性从句，不可省略。
1.__T_h__a_t __we will realize our dreams in the future is certain. 2.The fact is __t_h_a_t_ the Earth goes around the Sun. 3.__W__h_e_t_h_e_rshe will come back on time depends on weather. 4.I asked him __i_f/__w_h_e_t_h_e_r he could do me a favor. 5.Could you tell me the question _w__h_e_t_h_e_r English is useful for us now? 6.Word came ___t_h_a_t_ his son was admitted to Beijing University. 7.The christian Church rejected his theory, saying ___(_th_a_t_)__ it was against God's idea and ___t_h_a_t_ people who supported it would be attacked.
(完整版)高中英语名词性从句详解
(完整版)高中英语名词性从句详解名词性从句【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，名词性从句分为主语从句、表语从句、宾语从句和同位从句。
宾语从句——在复合句中作主句及物动词的宾语，也可作介词或某些形容词的宾语1。
连接词从属连词that whether if 不担任成分只起连接作用关系代词who whom whose whatwhich既担任成分，又起连接作用。
主语,宾语或表语等关系副词when where why how 既担任成分，又起连接作用常担任状语◆I think (that） you will like the pictures。
◆ He has become what he wanted to be ten years ago。
◆ I don't know why Jane was late for school this morning。
◆The teacher is pleased with what she said。
◆I’m afraid that I can’t go to the party。
2.注意事项(that通常可以省略）。
但如从句是并列句时，第二个分句前的that 不可省。
◆He told me (that） he was ill and that he would not come to the party。
②陈述语序◆ I want to know what he has told you。
◆ She will give whoever needs help a warm support。
③注意宾语从句中的时态呼应。
当主句动词是现在时,从句根据自身的句子情况,而使用不同时态。
当主句动词是过去时态（could, would除外），从句则要用相应的过去时态,如一般过去时,过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。
高中英语经典语法之：名词性从句(二)
名词性从句（二）●知识点精讲透析●考点一表语从句表语从句的连接词(1) 从属连词that。
在从句中不做成分。
如：The trouble is that I have lost his address. 麻烦是我把他的地址丢了。
(2) 从属连词whether, as, as if。
如：He looked just as he had looked ten years before. 他看起来还与十年前一样。
注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句。
如：All this was over twenty years ago, but it’s as if it was only yesterday. 这都是20多年前的事了，但宛如昨天一样。
注：可接表语从句的连系动词有be, look, seem, sound, appear等。
如：China is no longer what she used to be. 今日的中国不再是过去的中国了。
The question remains whether they will be able to help us. 问题还是他们能否帮我们。
He looked just as he had looked ten years before. 他看起来还与十年前一样。
(3) 连接代词who, whom, whose, what, which, whoever, whatever, whichever 在表语从句中做主语、宾语等。
如：That was what she did this morning. 那就是他今天早上所做的。
(4) 连接副词where, when, how, why。
如：What I wonder is when he left. 我想知道他是何时离开的。
(5) because, why引导的表语从句。
如：That's because he didn't understand me. 那是因为他没有理解我。
高中英语语法重中之重-----名词性从句与时态总结
一，名词性从句在句子中起名词作用的句子叫名词性从句 (Noun Clauses）。
名词性从句的功能相当于名词词组 , 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
一、引导名词性从句的连接词引导名词性从句的连接词可分为三类：连词： that （无任何词意） whether,if （均表示“是否”表明从句内容的不确定性） as if ,as though （均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词： what, whatever, who, whoever, whom,whose, whichever,whomever连接副词： when, where, how, why,how many,how much,how often不可省略的连词：1.介词后的连词2.引导主语从句和同位语从句的连词不可省略。
That she was chosen made us very happy. 比较： whether 与 if 均为 " 是否 " 的意思。
We heard the news that our team had won.但在下列情况下，只可用whether ：1.whether 引导主语从句并在句首2. 引导表语从句3. whether 从句作介词宾语4. 从句后有"or not"Whether he will come is not clear.大部分连接词引导的主语从句都可以置于句末，用it 充当形式主语。
It is not important who will go.It is still unknown which team will win the match.二 . 主语从句1、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。
(高中英语语法专题)名词性从句教师版 2
1）whether和if在宾语从句中可以互换，但是作介词宾语时连接词一般用whether。如：
It all depends on whether they will come back.
2）后面直接跟or not时用whether。如：
I didn’t know whether or not he had arrived inWuhan.
(A)It is clear/certain/likely/true/surprising that…
(B)It is a pity/shame/good idea/no wonder that ...
(C)It is said/reported/ believed/known/thought/suggested that …
e.g. I hope (that) everything is all right.
2、宾语从句中的连接词that有时可省有时又不可省，在以下几种情况中that不能省略：（A）当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时，that不可省略；（B）当that从句与另一名词性从句并列作宾语时，that不能省；（C）当that作介词宾语时，that不可省掉。如：
e.g. It doesn’t matter so much whether you will come or not.
3、that引导主语从句时，不能省略。
e.g. That he suddenly fell ill last week made us surprised.
注意：that从句作主语和宾语时，可以用it来替换成以下几种结构表达。
（一）引导名词性从句的连接词
完整版)高中英语名词性从句详解
完整版)高中英语名词性从句详解名词性从句可以作为主句的主语、表语、宾语和同位语。
它们分为主语从句、表语从句、宾语从句和同位从句。
宾语从句作为复合句中的主句及物动词的宾语，也可以作为介词或某些形容词的宾语。
它不担任成分，只起连接作用。
连接词可以是从属连词、关系代词、关系副词。
从属连词包括that、whether、if；关系代词包括who、whom、whose、what、which；关系副词包括when、where、why、how。
这些词既担任成分，又起连接作用。
宾语从句的例子有：I think (that) you will like the pictures。
He has e what he wanted to be ten years ago。
I don’t know why Jane was late for school this morning。
The teacher is pleased with what she said。
I'm afraid that I can't go to the party.在宾语从句中，由that引导的从句可以省略，但如果从句是并列句时，第二个分句前的that不可省略。
另外，宾语从句中的时态要与主句呼应，如果主句动词是过去时态，从句则要用相应的过去时态。
如果从句表示的是客观真理、科学原理或自然现象，从句仍用现在时态。
如果主语谓语动词为think、consider、suppose、believe、expect、guess、imagine等，其后的宾语从句若含有否定意义，一般要把否定词转移到主句谓语上，从句谓语用肯定式。
XXX。
It is often said that traveling broadens the mind。
I XXX I was determined to carry out the plan。
I consider it XXX。
高中英语语法总结-名词性从句
名词性从句在句子中起名词作用的句子叫名词性从句(Noun Clauses）。
名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
高中英语定语从句和名词性从句综合训练名词从句名词从句有四类：宾语从句、主语从句、表语从句、同位语从句。
例如：宾语从句：I don’t know where he will go.主语从句：Where he will go is unknown.表语从句：The problem is how we can get so much money.同位语从句：We all feel sorry about the news that he failed in the game.下面几点是学习名词从句要加以注意的：1．w hether和if都可以引导宾语从句表达“是否”意，（即引导宾语从句时if和whether 可以互换）但以下几种名词从句要用whether（不用if）引导：（1）引导主语从句，且在句首时。
例：Whether he has won the tennis is not known.(但It is not known whether/if he has won the tennis).（2）引导表语从句时。
例The problem is whether he can get a job.（3）引导同位语从句时。
例：I have no idea whether he will come.（4）介词后的whether从句。
例：I worry about whether I hurt her feelings.2．位于句首引导主语从句的that不可忘。
例如：That he got the first place in the competition surprised all of us.3．在“It is suggested/proposed/ordered/a pity/no wonder/necessary/strange/…＋that从句”结构中，that从句谓语有时用（should）do这样的虚拟语气形式。
高中英语名词性从句知识点含练习
高中英语名词性从句知识点（含练习）基础回顾1.表语：表语用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、形容词、副词、介词短语、动词的-ing、不定式、从句来充当，它常位于系动词(be, become, appear, seem,look,sound,feel,get,smell等词)之后。
如：Her job is selling computers. 此句表语为selling computers如果句子的表语也是由一个句子充当的，那么这个充当表语的句子就叫做表语从句。
2.同位语：一个名词(或其它形式)对另一个名词或代词进行解释或补充说明，这个名词(或其它形式)就是同位语。
如Mr. Smith,our new teacher,is very kind to us. 我们的新老师史密斯先生对我们很好。
Mr.Smith是主语our new teacher的同位语，指同一人。
同位语从句I heard the news that our team had won．我听到了我们队获胜的消息。
that our team had won 解释news的具体内容，是同位语正文一、定义在复合句中具有名词的性质的作主语、表语、同位语、宾语的从句叫名词性从句。
因此，我们把主语从句、表语从句、同位语从句和宾语从句这四种从句统称为名词性从句。
That he finished writing the composition in such a short time surprised us all他在很短的时间内写完作文让我们都很惊讶 (主语从句)The trouble is that she has lost his address. 麻烦的是她把他的地址搞丢了。
（表语从句）They have no idea at all where he has gone. 他们不知道他去什么地方了。
（同位语从句）Do you remember how he came? 你记得他怎么来的么？（宾语从句）二、语序名词性从句要采用陈述句语序。
高中英语语法复习--名词性从句考点归纳
2. 如果主句谓语是过去时 从句谓语动词一般用过 如果主句谓语是过去时,从句谓语动词一般用过 去的某种时态,但从句表达的是客观事实 真理、 但从句表达的是客观事实、 去的某种时态 但从句表达的是客观事实、真理、 自然规律等时,从句谓语通常用一般现在时 从句谓语通常用一般现在时。 自然规律等时 从句谓语通常用一般现在时。 他告诉我他正在为考试做准备。 他告诉我他正在为考试做准备。
名词性从句要点 1 时态的呼应 2 主谓一致 3 虚拟语气在从句的运用
1. 如果主句时态是现在时或将来时 如果主句时态是现在时或将来时, 从句谓语可根据句意需要而选用任 一种时态。 一种时态。
a.他相信他的梦想总有一天会实现的。 a.他相信他的梦想总有一天会实现的。 他相信他的梦想总有一天会实现的
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一、名词性从句的语序 (1) 名词性从句构成有两种 a. That + 陈述句 That light travels in straight lines is known to all. b. 疑问词 句子的剩余成分 疑问词+句子的剩余成分 This is what we are looking for.
虚拟语气在名词性从句中的使用 一个坚持(insist)、两个命令 一个坚持 、两个命令(order, command)、 、 三个建议(advise, suggest, propose)、 三个建议 、 四个要求(demand, require, request, ask) 四个要求
结构为 should + do, should可省略 可省略 被动语态为should be done ,should 也可 被动语态为 省略。 省略。 无论这些词的词形变化出现在什么句子 中，都要优先考虑虚拟语气（should do) 都要优先考虑虚拟语气（
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名词性从句在句子中起名词作用的句子叫名词性从句(Noun Clauses）。
名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
第一节知识点讲解顾名思义，主语从句在句子中作主语。
有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾部，前面用形式主语it代替。
从句作主语时，谓语动词一般为单数形式。
如:What I saw was beyond any verbal description.That his hair was turning grey worried him a bit.Why the company denied the contract is still unknown.When and where the government will build a city square is under discussion.It is pretty annoying that a small part of the machine is missing.It remains to be seen whether the new novel will be well received.Tips: 主语从句的that绝对不能省去。
因为句子是不能做主语的，故用that引导。
若去掉则没有了主语，而宾语从句的that可省。
主语从句：That he is right is known to all of us.宾语从句：We all know (that) he is right.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。
（2）It is said /reported…结构中的主语从句不可提前。
例如：正确表达：It is said that President Jiang will visit our school next week.错误表达：That President Jiang will visit our school next week is said.（3）It happens/occurs…结构中的主语从句不可提前。
例如：正确表达：It occurred to him that he failed in the examination.错误表达：That he failed in the examination occurred to him.（4）It doesn’t matter how/whether …结构中的主语从句不可提前。
例如：正确表达：It doesn’t matter whether he is wrong or not.错误表达：Whether he is wrong or not doesn’t matter.（5）含主语从句的复合句是疑问句时，主语从句不可提前。
例如：正确表达：Is it likely that it will rain in the evening?错误表达：Is that will rain in the evening likely?4. what 与that 在引导主语从句时的区别what 引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。
例如：a) What you said yesterday is right.b) That she is still alive is a consolation宾语从句就是在复合句中作宾语的名词性从句，通常放在主句谓语动词(及物动词) 或介词之后。
We assumed that there would be more than 100 guests.He told the police in detail what he saw and heard.Nobody is sure what humans will look like in a million years.That will depend on whether they can get the chance.Whether I will have the time I am not sure at the moment.The conductor complained that we were not gifted in singing and that he would never come again.1. 作动词的宾语(1) 由that引导的宾语从句(that 通常可以省略), 例如：I heard that be joined the army. 我听说他参军了。
(2) 由what, whether (if) 引导的宾语从句，例如：a) She did not know what had happened. 她不知道发生了什么。
b) I wonder whether you can change this note for me. 我想知道你是否能帮我改一下笔记。
(3) 动词＋间接宾语＋宾语从句。
例如：She told me that she would accept my invitation. 她对我说她会接受我的邀请。
2. 作介词的宾语，例如：Our success depends upon how well we can cooperate with one another. 我们的成功取决于我们之间的合作。
3. 作形容词的宾语，例如：I am afraid(that) I’ve made a mistake. 我恐怕我已经犯了一个错误。
注意：that 引导的从句常跟在下列形容词后作宾语：anxious, aware, certain, confident, convinced, determined, glad, proud, surprised, worried, sorry, thankful, ashamed, disappointed, annoyed, pleased, hurt, satisfied, content 等。
也可以将此类词后的that 从句的看作原因状语从句。
4. it 可以作为形式宾语it 不仅可以作为形式主语，还可以作为形式宾语而真正的宾语that 从句则放在句尾，特别是在带复合宾语的句子中。
例如：We heard it that she would get married next month. 我听说她下个朋就会结婚了。
5. 后边不能直接跟that 从句的动词这类动词有allow, refuse, let, like, cause, force, admire, condemn, celebrate, dislike, love, help, take, forgive等。
这类词后可以用不定式或动名词作宾语，但不可以用that引导的宾语从句。
如：正确表达：I admire their winning the match.错误表达：I admire that they won the match.6. 不可用that从句作直接宾语的动词有些动词不可用于“动词＋间接宾语＋that从句“结构中，常见的有envy, order(命令), accuse, refuse, impress, forgive, blame, denounce（公开指责）, advise, congratulate等。
例如：正确表达：He impressed the manager as an honest man.错误表达：He impressed the manager that he was an honest man.7. 否定的转移若主句谓语动词为think, consider, suppose, believe, expect, fancy（想象）, guess, imagine等，其后的宾语从句若含有否定意义，一般要把否定词转移到主句谓语上，从句谓语用肯定式。
例如：I don’t think thi s dress fits you well. 我认为这件衣服不适合你穿。
三．【表语从句】表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语＋连系动词＋表语从句”。
可以接表语从句的连系动词有be, look, remain（留下、保持、依然）, seem等。
引导表语从句的that常可省略。
另外，常用的还有the reason is that… 和It is because 等结构。
例如：1) The question is whether we can make good preparation in such a short time.2) This is why we can’t get the support of the people.3) But the fact remains that we are behind the other classes.4) The reason he is late for school is that he missed the early bus.同位语从句就是在复合句中作名词的同位语的名词性从句。