高中英语语法-名词性从句-全

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。

高中英语语法总结大全之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从句（Noun Clauses)。

名词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。

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：连接词：that，whether,if 不充当从句的任何成分）连接代词：what， whatever， who， whoever, whom, whose， which.连接副词：when, where， how, why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。

We heard the news that our team had won。

比较：whether与if 均为”是否"的意思。

但在下列情况下，whether 不能被if 取代：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.名词性that—从句1)由从属连词that引导的从句叫做名词性that—从句。

That只起连接主句和从句的作用,在从句中不担任任何成分,本身也没有词义.名词性that—从句在句中能充当主语、宾语、表语、同位语和形容词宾语，例如：主语：That he is still alive is sheer luck.他还活着全靠运气.宾语：John said that he was leaving for London on Wednesday。

高中英语讲义---- 名词性从句（主从、表从、宾从，同从）1，陈述句做名从用连词that + SV, that 表主句确定从句完好，不做成分。

主从可用it 做形式主语，宾从第一个that 可省略。

You study hard.主从：That you study hard is known to us.= It is known to us that you study hard.表从：My opinion is that you study hard .宾从：I think (that) you study hard. …and that (不能省略)….同从：My opinion that you study hard is known to us. *比拟同从和主从！●一般抽象名词后对其进展说明和说明的完好句子就是其同位语从句，不完好就是定语从句。

I appreciate your idea that we have an exam every week. （that后完好—同从）I appreciate your idea that you came up with last time.（that后不完好---定从）2，一般问句做名从用连词whether(是否) + SV，whether表主句不愿定从句完好，宾从中可用if（介词后或宾从后有or not时只用whether）。

Does your friend like English ?主从：Whether your friend likes English isn’t clear .=It isn’t clear whether your friend likes English.表从：My question is whether your friend likes English.宾从：I don’t know whether/ if your friend likes English.同从：My question whether your friend likes English isn’t clear.3, 特殊问句做名从用疑问词（连词）+ SV, 疑问词做主语时干脆+谓语。

高中英语语法系列：名词性从句考点一：主语从句 1.主语从句的引导词that ，whether ，i 连接词f 只起连接作用，不在从句中作成分what ，who ，whom ，which ，whichever ，whatever ，whoeve 连接代词r 在从句中作主语、宾语、表语或定语when ，where ，how ，wh 连接副词y在从句中作状语Your support is important to our work.Whatever you can do helps.Where Li Bai ，a great Chinese poet ，was born is known to the public ，but some won't accept it.[易错提示](1)that 引导主语从句时一般不省略。

(2)当主语从句位于句首时，常用whether 引导，而不用if 。

2.形式主语it 作形式主语的常见句型：(1)It ＋be ＋形容词(necessary/likely/important/certain 等)＋that 从句(2)It ＋be ＋名词(短语)(a pity/a shame/no wonder 等)＋that 从句(3)It ＋be ＋过去分词(said/told/reported 等)＋that 从句(4)It ＋不及物动词(seem ，appear ，happen ，matter 等)＋that 从句It is uncertain what side effect the medicine will bring about ，although about two thousand patients have taken it.It doesn't matter whether you pay by cash or credit card in this store.【随堂练习：语法填空】1.(2019·长春月考)It remains to be seen policy can be put into practice the newly formed committee's.2.in our school breaks the rule will be punished.3.(2019·安溪模拟)love for his son struck me most in the movie was the father's deep.4.(2019·龙岩五校期中)Therefore,it is advisable treat them with care you should value and.【参考答案】1.whether2.Whoever3.What4.that考点二：宾语从句 1.宾语从句的引导词that ，whether ，i 连接词f只起连接作用，不在从句中作成分what ，who ，whom ，which ，whichever ，whatever ，whoeve 连接代词r在从句中作主语、宾语、表语或定语连接副词when ，where ，how ，why在从句中作状语She asked me whether I had returned the books to the library ，and I admitted that I hadn't.Our teacher always tell us to believe in what we do and who we are if we want tosucceed.[易错提示](1)that引导宾语从句时，常被省去，但下列情况下不能省略：①动词后跟有多个that引导的宾语从句时，只有第一个that可省略，其余的不可省略；②宾语从句前有插入语时；③that引导的从句位于句首时。

高中英语知识点归纳名词性从句名词性从句是英语中的一个重要语法知识点，它在句子中起着名词的作用。

名词性从句一般由连接词引导，可以作主语、表语、宾语、同位语等。

它的运用能够使句子更加丰富多样，增加表达的灵活性。

本文将对名词性从句的几种常见情况进行归纳总结。

一、名词性从句作主语名词性从句可以作为句子的主语，它承担了动词的逻辑主语的地位。

常用的连接词有：that, whether, if等。

1. 引导词为that的情况：例如：That he didn't come as he had promised was disappointing.翻译：他没有按照承诺的那样来，真令人失望。

2. 引导词为whether/if的情况：例如：Whether he will come or not remains unknown.翻译：他是否会来还是个未知数。

二、名词性从句作表语名词性从句可以作为句子的表语，表达主语的性质、特点、状态等。

常用的连接词有：that, whether, what等。

例如：It is unclear whether he is telling the truth or not.翻译：他是否在说真话还不清楚。

三、名词性从句作宾语名词性从句可以作为句子的宾语，接在及物动词、介词后面。

常用的连接词有：that, whether, if, what, who, whom, which, whose等。

1. 当宾语从句是及物动词的宾语时，常用连接词是that。

例如：He said that he would come tomorrow.翻译：他说他明天会来。

2. 当宾语从句是介词的宾语时，常用连接词是whether/if, 当介词为介词to时，连接词也可以用为不定式to。

例如：She is not sure about whether/if he will join us.翻译：她不确定他是否会加入我们。

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。