名词性从句的几个难点
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名词性从句的几个难点
(一)that不可省略的情况
1、主语从句，that从句置于句首时;
2、当一个句子有两个或多个并列的宾语从句时，引导第二和以后几个从句的that不可省略;
3、由it作形式宾语时，that引导的宾语从句中，that不可以省略。
(二)wh-ever与no matter wh-的用法区别
Wh-ever既可引导名词性从句，又可引导让步状语从句;而no matter wh-只能引导让步状语从句。
(三)as if/though, because, why可以引导表语从句
注意：because引导的表语从句，主语不能是reason或cause,而且since,as不能引导表语从句。
(四)that引导的同位语从句与关系代词that引导的定语从句的区别
That引导的同位语从句成分是完整的，that在从句中不担当任何成分;that引导的定语从句成分是残缺的，that在从句中充当主语、宾语或表语。
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名词性从句知识点总结
名词性从句知识点总结 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。 一．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。 （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.
人教版中考英语复习专题 名词性从句难点总结 练习
人教版中考英语复习专题名词性从句难点总结练习 一、初中英语名词性从句 1．________ manners are very important in every country is known to all，but the trouble is that different countries have different ideas about ________ good manners are. A. That; what B. That; that C. What; that D. What; what 【答案】 A 【解析】【分析】句意：众说周知，礼貌在每一个国家中都是非常重要的，但是麻烦是，不同的国家对于什么是良好的礼貌有着不同的认识。逗号前有两个谓语动词，一个是are，一个是is known，故是两句话，需填连词连接这两句话，根据句意可知，前面是主语从句，故填that，此处的that，只起连接作用不作任何成分。about是介词，其后是个句子故应填连词把这两句话连接起来，所缺词作are的表语，故填what。因此选A。 【点评】考查名词性从句，本题涉及that引导的主语从句和what引导的宾语从句。 2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others. A. it; that B. what; that C. that; what D. which; that 【答案】 C 【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。第一空为宾语从句，从句结构完整用that起连接作用，第二空为主语从句，从句中consider缺少宾语，应该用what，故选C。 【点评】考查名词性从句，本题涉及that引导的宾语从句和what引导的主语从句。 3．Some people believe _______ has happened before or is happening now will repeat itself in the future. A. whatever B. whenever C. wherever D. no matter what 【答案】 A 【解析】【分析】句意：一些人认为之前发生的或现在正在发生的任何事情在将来都会重复发生。Whatever has happened before or is happening now是一个主语从句，whatever既引导起这个主语从句，也在句中做主语。BC项都属于副词的性质，都不能做主语，通常只能做状语；no matter what只能用来引导状语从句，故选A。 【点评】考查名词性从句，本题涉及"特殊疑问词+ever"引导的主语从句。 4．It________that the road will be closed tomorrow for repairs. A. was announced B. has been announced C. had been announced D. would be announced 【答案】 B 【解析】【分析】本题考查动词的时态和语态。题干句子中that到句子结束是宾语从句，且从句动词用“will＋动词原形”表示将来，由此推断出空白处谓语动词应用现在的某种时态，在所给四个选项中，只有B项正确。
同位语从句重难点解析及习题教学文案
同位语从句 一、同位语从句概述 同位语从句是用以解释说明某一名词内容的从句，常见的可以被同位语从句修饰的名词有：belief,chance,doubt,hope,idea,news,opinion,thought,promise等。引导同位语从句的词有连词that,whether和副词how,when,where等。 二、同位语从句点拨 （1）同位语从句是意义完整的陈述句时，用连词that引导。注：that在从句中不充当任何成分，只起连接作用，通常不省略。如：I got the news that he would come to see me the next week. （2）同位语从句是疑问句时，应根据语境选用who,when ,where,how,whether(不能用if)等词来引导。如：The question who is the best for the job requires consideration. （3）分隔式同位语从句：当主句的谓语较短，而同位语从句较长时，为了使句子保持平衡，常把同位语从句后置。如：An idea came to him that he could buy her a diamond ring. （4）后面常跟同位语的词有：doubt,fact,hope,idea,message,news,possibility,promise,question,suggestion,truth,thoug ht,warning,wish等。注：advice,order,suggestion等词表示建议、命令的词后的同位 语从句中的谓语动词须用(should) +动词原形。如：He made the suggestion that the meeting(should) be put off. 三、同位语从句与定语从句的区别 （1）所表达的内容不同：同位语从句和定语从句一般是放在某一名词后面，但同位语从句是对该名词的解释和说明，而定语从句是对该名词的修饰，说明它的性质特 征。如：The fact that he presented was a strong proof. 他所提供的事实是一个强有力的证据。（定语从句） The fact that she hadn’t said anything surprised us all. 她一言不发的事实让我们每一个人都很惊讶。（同位语从句） （2）在句中所起的语法作用不同：引导定语从句的that是关系代词，它的作用是连接主句和从句，并代表先行词在从句中充当句子成分，而且that作宾语时可省略， 指物时，可以用which代替。引导同位语从句的that是连词，只起连接主句和从 句的作用，它不充当任何成分，不能省略，也不可被which代替。如: We expressed the hope that Mr and Mrs Smith would come to visit China the next year. 我们表达了希望史密斯夫妇第二年到中国来访的愿望。（同位语从句） The news(that/which)we heard spread all over the city. 我们所听到的消息传遍了整个城市。（定语从句） （3）所修饰的词不尽相同：同位语从句所修饰的名词数量有限，往往是含有某种信息的词，如：message,news,fact,hope,desire,problem,idea,suggestion,advice,questtion, order,belief,doubt,fear,truth,throught等，而定语从句修饰的先行词无此限制。 （4）wh-引导词引导同位语从句时，有其本身的疑问含义；引导定语从句时则没有疑问的意思。如；
考研英语长难句：名词性从句-同位语从句
考研英语长难句：名词性从句-同位语从句所谓同位语，就是用来补充说明名词的成分。当我们用一个完整的句子来补充说明名词时，即构成同位语从句。所以同位语从句都是位于一个名词后面，用来进一步说明前面的名词的内容，这个名词就是同位语的先行词。 1.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。后面可以接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，decision等（一般的“抽象”名词都可用），例如： 【第1句】 I’ve come from Mr Wang with a message that he won’t be able to see you this afternoon． 我从王先生那里来，他让我告诉你他今天下午不能来看你了。 2.英语中引导同位语从句的词通常有连词that（不能省略），whether，连接代词what，who。连接副词how，when，where等。（注：if不能引导同位语从句。）例如：【第2句】 He must answer the question whether he agrees with it or not. 他必须回答他是否同意这样一个问题。 We haven’t yet settled the question where we are going to spend our summer vacation.
到哪儿去度暑假，这个问题我们还没有决定。 Our teacher gave us some advice how we (should) use the computer. 老师给我们提出了一些如何使用电脑的建议。 3.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。The thought came to him that maybe the enemy had fled the city．他突然想起敌人可能已经逃出城了。 1. A century ago, Freud formulated his revolutionary theory that dreams were the disguised shadows of our unconscious desires and fears; by the late 1970s, neurologists had switched to thinking of them as just “mental noise”—the random by-products of the neural-repair work that goes on during sleep. (2005 Text 3) 【念念有词】 I)formulate v. 制定；规划（策略，提议）；（简练或系统地）阐述；用公式表示。formulate a policy / theory / plan / proposal 制定一项政策/理论/计划/提议；She has lots of good ideas, but she has difficulty formulating them.（她有很多好想法，但很难把它们表达出来。）
名词性从句翻译句子
名词性从句是由if, whether, that 和各种疑问词充当连接词所引导的从句，其功同名词一样。 一．主语从句 1. It 作形式主语和it引导强调句的比较 It is a pity that you didn't go to see the film. It doesn't interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window. 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… (4) it ＋过去分词＋从句 It is reported that…据报道… It has been proved that…已证实… 3. 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： 1) What you said yesterday is right. 2) I know that he will study. 3) I know what he will study.
名词性从句考点难点
名词性从句的重点、难点、考点： 名词性从句在功能上相当于名词 名词性从句的定义:在复合句中起名词作用的从句叫名词性从句(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。 (一）引导名词性从句的连接词 1、连接代词：who, whose, whom, what, which。有词义，在从句中担任成分，如主语、表语、宾语、或定语等。 2、连接副词：when, where, why, how。有词义，在从句中担任成分，作状语。 3、连接词：that, whether, if, as if。that无词义，在从句中不担任成分，有时可省略；as if（好象） 虽有词义，但在从句中不担任成分。 注意：连词的选用：依据“缺什么补什么”原则确定正确的连词。如果句子中缺主语，指人用who，指物用what；如缺宾语，指人用whom，指物用what；如缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用what或which；什么都不缺用that。whether 和if（是否）， 1. It’s not immediately clear ____ the financial crisis will soon be over . A. since B. what C. when D. whether 2. As a new diplomat , he often thinks of _____ he can react more appropriately on such occasions. A. what B. which C. that D. how 3. When asked ____ they need most , the kids said they wanted to feel important and loved. \ A. what B. why C. whom D. which 4. The last time we had great fun was ___ we were visiting the Water Park . A. where B. how C. when D. why 5. Why not try your luck downtown, Bob? That’s _____the best jobs are . A. where B. what C. when D. why 6._______ you don't like him is none of my business. (上海1992) A. What B. Who C. That D. Whether 7.Go and get your coat．It's ____ you left it． A. where B. there C. here where D. where there （二）that在名词性从句中的用法 that 引导名词性从句不充当任何成分，没有具体意义。以下情况that不能省略： 1.主、表、同从句不能省 That I can pay back the help people give me makes me happy. It is certain that he will succeed. The order that all the soldiers should stay still is given by the general. The fact is that he has not been seen recently. 2.宾语从句中的that 一般可以省，但以下情况不能： a. 并列宾语从句中第一个that 可以省，后面的都不能省。 I knows (that) he is a worker and that he lives in Shanghai. b.介词in , except 后面的that 不能省。 The reason lies in ______she works harder than others do. The higher income tax is harmful in ______it may discourage people from trying to earn more. c.主句动词后有其它从句插入，或连接词后有其它从句插入，that 不能省。 He judged ______ because he was a child , he didn't understand what he said . Everyone knows ____ happened and_____ she was worried . A that, that B. what, that C. what, / D. that , what d. it 做形式，that做真正的宾语引导从句，that不能省。 I think it difficult ____we finish the task in only one day. A / B. that C. what D. which e.若主句的谓语动词是appear，agree，learn，suggest，observe等时，that通常不可省略。例如：We agreed that all the students must plant trees in the park. 1. China’s success in manned-spacecraft travel shows ____ our country has become one of the greatest powers in space research. A. what B. which C. 不填 D. it that （三）、whether与if的辨用 whether与if都可以引导宾语从句，常可互换。但在下列情况下用whether。 a. 主语从句 b. 表语从句 c. 同位语从句 e. 介词后的宾语从句 f.后接动词不定式(whether to do sth.)
定语从句重难点教学案例
英语定语从句重难点教学案例 定语从句是高中英语语法教学的一个重点，也是难点。说它是重点，因为它始终贯穿于英语教学和运用中。说它是难点，是因为受母语的影响，学生经常会弄错定语从句的位置，主次不分，从而会在运用中出现一些中式英语。还有就是学生对诸多的定语从句的引导词不知如何选取。还有，以往的语法课都会让学生觉得乏味，参与性不强。鉴于以上存在的问题，我特设计了以下的课堂教学。 一、教学分析 1. 教学内容：The Attributive Clause 是语法课。主要介绍由that, which, who, whose, whom, where, when, why ，as 等引导的定语从句。根据学生的实际情况和授课时间，本堂课我只让学生初步掌握that,which,who,where,when,why 引导的定语从句。 2. 教材分析及处理语法课一般都比较枯燥乏味。以往我的语法教学就是列出框框条条，从头讲到尾，到头来没有多少学生能听得懂。为了调动学生的积极性和参与性，我改变了以往的做法。我采取了以下做法： （1））课前布置任务。以小组为单位，每个小组找出他们最喜欢的一首中文歌曲。（2））借助多媒体、录音机、光盘等辅助教学设备，使枯燥的语法教学变得 有声有色。 （3））采用翻译法、探究法和学生中心教学法，设计一些合适的活动，使学生 在轻松愉快的活动中了解定语从句，并学会运用定语从句。 3. 教学目标： （1））知识目标：了解由which, that ， who ,where ,when ,why 引导的定语从句。 （2））能力目标：掌握和很好的运用定语从句。 （3））情感目标：了解中西方语言的不同表达方式。从而养成在学习和做事中 要注意观察和比较的习惯。 4 ．教学重点： 1 ）初步了解并能准确翻译由which, that ，who ,where ,when ,why 引导的定语从句。 2）判断定语从句的位置。 5．教学难点：对定语从句引导词的选择。 课堂教学过程 Step I Leading-in （5 分钟） 教师先通过多媒体播放《小芳》的中文歌曲，以吸引学生的注意力，然后问: Do you like this song? Can you try to put the underlined parts into English? （附歌词）
定语从句与名词性从句的区别
名词性从句里面各个连接词的区分 陈述语气 That +陈述语气（肯定语气）： 空气污染对气候有很大影响是明摆的事实。 真可惜我们不能去游泳. 特殊疑问词+ever whoever, whatever, …… 无论谁触犯了法律都应该被惩罚。 疑问语气 Whether 和if 你是否接受她的邀请与我无关。 People are involving in a debate aboutwhether parent should parents make suggestions to teachers. 特殊疑问词 Who 谁泄漏了那个消息还不得而知。 where 我不知道要去哪里。 What 我也在质疑近来她都在做什么。 I am doubting what she is doing. It is your heart that makes you noble. What makes you noble is your heart. 我不知道要选择哪一个
How, 我不知道该怎么做 Why 1)为什么他走得那么匆忙是一个问题。 可以在后面加上疑问语气的同位从句的先行词有哪些？ Issue，problem，question，puzzle, debate，doubt 延伸：名词性从句省略主语的情况： I don’t know what to do. I don’t know what I can do. 条件是，从句里的主语和主句的主语是一样的。 非谓语动词作状语，当主干的主语与非谓语的主语一致，可以省略非谓语里面的主语，否则，应当在非谓语前面加上非谓语的主语。 Playing basketball，Mike is strong. Weather permitting, I will go out for a picnic. 时间状语从句：主干的主语与非谓语的主语一致 While eating an apple, I was playing football. 事实上是对While I was eating an apple, I was playing football. 的省略。 同位语重句
初中英语语法名词性从句
名词性从句 在句子中起名词作用的句子叫名词从句。名词从句的功能相当于名词词组，名词从句又可分为主语从句、宾语从句、表语从句和同位语从句。 一．主语从句 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。that在句中无词义，只起连接作用。连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。主语从句要求使用陈述句语序。 What surprised me most was that the little girl could play the violin so well. How he was successful is still a puzzle. That he is going aboard made him excited. Where the English party will be held has not yet been announced. 注：有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。 It is interesting that you like him. It is a pity that you can not go to the party tonight. 2.连接词的选用 （1）that和what的选用 that和what都可引导主语从句。what除起连接作用外，还在名词性从句中充当某些成分，可作从句的主语、宾语或表语。而that在名词性从句中不充当任何成分，无词义，只起连接词作用。 What he wants is a book. 他想要的是一本书。 That light travels in straight lines is known to all. 众所周知，光线沿直线运行。 （2）if和whether的选用
名词性从句重难点
名词性从句重难点讲解 1.难点一：that引导的定语从句和同位语从句区别： 1.My decision made my mother angry ______I want to be a model . 2.I will tell my decision to you ____I made last night. 3.There is much chance _____he will won the game. 4.He lost the chance _____I gave . 5.the fact _____he had not said anything surprised everybody. 6. This is the fact _______ you must know clearly. 7. There is a common belief among them_____rubbish can and should be put to good use. 8. The news came_______ the British Queen Mother celebrated her 101st birthday in good health, ____is not surprising, because she lives an easy life and gets the best medical care. 9. Words came _______a terrible storm would take place in Hainan. 10.There’s a feeling in me ___ we’ll never know what a UFO is. 总结：that引导定语从句时，that在定语从句中充当成分；that 引导同位语从句时，that 不充当从句的成分。 2.难点二：宾语从句详细讲解： ①从句语序问题 ②从句时态问题 A主句为现在的时态，从句可为任意时态 B主句为过去时态，从句一定要用过去的某种时态 C宾语从句为客观事实或者真理，用一般现在时态 He said he had seen the film. She said she would come. My father told me the sun rises in the east. He said Yao Ming is much taller than him. 3.用形式宾语it的宾语从句常见结构： A作make，think，find，consider，feel ，believe等动词的宾语(think, feel, make, find, believe, consider…) + it + adj./ n. that… He feels it his duty to help others. We found it impossible to finish the work in a day. He made it clear that we shouldn't break the school rules. She made it her duty to look after all the other people's affairs in that town. B某些表示喜，怒，哀，乐的动词（like，enjoy，love，prefer，hate，appreciate）用it 作形式宾语，接if 或者when 引导的宾语从句。 I hate _______ when people talk with their mouths full. A it B. that C. this D. Them I do not like it when my mother asks me to eat eggs. I enjoy it when we do exercises on cold winter mornings. I love it in the summer when there are varieties of plants and fruits. C一些常见的句型： Owe it to sb that 把……归功于…… Take it for granted that 想当然…… Keep/bear it in mind that 记住…… Depend on it that 放心……
突破定语从句重难点
突破定语从句重难点 定语从句对于高中学生而言一直是一个重点，更是高考中的热点。但在学习过程中学生没有办法准确的掌握。主要原因是该知识点内容繁杂，同时学生还必须掌握一定的句子结构分析的基本知识。为使学生更容易掌握定语从句的知识点本文作者将定语从句中的疑难点及高考中的常考点进行了总结，并配以例句讲解及适量练习题以利于学生更好理解和掌握。 . Practice Ⅰ运用所学选择正确关系词 1. when I arrived ，Bryan took me to see the house ____ I would be staying. A. What B. when C. where D. which 2. He wrote a letter _____ he explained what had happened in the accident. A. What B. which C. where D. how 3. By 16：30，____ was almost closing time，nearly all the paintings had been sold. A. Which B. when C. what D. that 4. I can never forget the day ____ we worked together and
the day ____ we spent together. A. when；which B. which ；when C. what；that D. on which；when 【难点提示1】只能用that的情况 1. That’s the most expensive hotel th at I’ve ever stayed in. 2. That’ll be the last thing that I’ll do to you. 3. The ship was the first one that ever sailed across the Atlantic Ocean. 4. The scientists and his achievements that you told me about are admired by bus all. 5. Who is the man that is standing over there？ 6. Which of the books that have beautiful colors are on how to learn English？ 7. I don’t agree with everything that you said at the meeting. 1. This is the only book____ I can find. 2. All the apples ______ fell down from the trees were eaten up by the pigs. 3. I always miss the teachers and the kindergarten _____ my parents often talk about. 【难点提示2】Whose引导的定语从句可改写为 the+ n.+of which / whom +定语从句
新托福长难句精析-名词性从句
1.What is particularly meaningful to anthropologists is the realization that although the materials available to a society may to some extent limit or influence what it can do artistically, the materials by no means determine what is done． 解析：(三个what引导的从句，第一个作主语，第二个与第三个都作宾语；that至句末的部分作realization的同位语) 分句1：What is particularly meaningful to anthropologists is the realization 分句2：although the materials available to a society may to some extent limit or influence what it can do artistically 分句3：the materials by no means determine what is done． 2和3并列 1和2，3嵌套，2和3是1中the realization的同位语 译文：对人类学家有着特殊意义的是这样一种认识：尽管一个社会能够得到的材料可能在一定程度上限制或影响它在艺术上的作为，但这些材料绝对不能决定该社会所做的事情。 2. As a result，claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form the basis for folklore． 解析：(同位语从句claims that…) 分句1：that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health 分句2：claims have become widely publicized and form the basis for folklore 分句2嵌套分句1，分句1作为分句2主语的同位语从句嵌套在分句2中。因此本句的主句是claims have become widely publicized and form the basis for folklore. （那些观点广为人知，并成为一些民间说法的基础。）同位语从句是that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health：只食用绿色食品就能防治疾病或增进健康 译文：结果，那些认为只食用绿色食品就能防治疾病或增进健康的观点广为人知，并成为一些民间说法的基础。 3.There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones，that fertilized eggs are nutritionally superior to unfertilized eggs, that untreated grains are better than fumigated grains and the like． 解析：(并列同位语从句reports that…，that…，that…) 分句1：There are numerous unsubstantiated reports 分句2：natural vitamins are superior to synthetic ones 分句3：that fertilized eggs are nutritionally superior to unfertilized eggs 分句4：that untreated grains are better than fumigated grains and the like 分句1是整个长句的主句，分句2、分句3和分句4是并列关系，共同构成分句1的同位语从句。本句的意思是有很多没有经过证实的报道，然后并列了三个未经过证实的报道的从句。译文：关于天然维生素优于人造维生素，受精蛋比未受精蛋的营养价值更高，未经熏蒸消毒处理的谷物比经过处理的好等等报道屡见不鲜，但都没有得到证实。
(完整版)名词性从句例句
英语写作提高——名词性从句例句 一．主语从句 1、 Who was responsible for the accident is not yet clear. 2、 Why he left so abruptly is not known to any of us. 3、When he’ll be back depends much on the weather. 4、 Whether she comes or not doesn’t concern me. 5、 Wherever he once lived is well preserved. 6、 It is natural that they should have different views. 7、It was quite plain that she didn’t want come. 8、It’s a pity that he can’t swim. 9、It was a fearful disappointment to your mother that you didn’t come yesterday. 10、It hap pened that she wasn’t in that day. 11、It struck me that we ought to make a new plan. 12、It was rumoured that he was suffering from a tone in the kidney. 13、It is estimated that 25 million school lunches are sold each day. 14、It’s none of your business wher e I spend my summer. 15、It’s doubtful whether the payment is legal. 16、It was a question whether he should get married. 二．宾语从句 1、 We never doubt that he is honest. 2、I can’t imagine what made him act like that. 3、 Nobody can tell when she will arrive. 4、 Before I came downstairs I had prepared myself very carefully for what I must say. 5、 You must give it back to whoever it belongs to. 6、Why don’t you bring it to his attention that you’re too ill to go on working? 7、I’ve heard it said that you’ve won a scholarship. 8、 She has seen to it that all the children are well taken care of. 9、 I feel it a terrible thing that my mother should have to toil so endlessly. 三．表语从句 1、The fact is that he didn’t notice the car until too late. 2、 The mystery is whether he ever went there at all. 3、 The question is why he likes the place so much. 4、 The problem is not who will go but who will stay. 5、Your brother’s health is not what it used to be. 四．同位语从句 1、 They had to face the fact that the nearest filling station is 30 miles away. 2、 Have you any idea how soon they are coming? 3、Obviously there was little probability that they would succeed, but they didn’t mind. 4、 The suggestion that the new rule be adopted came from the chairman. 5、 There is a feeling in me that it is going to rain. 6、 The proposal has been put forward that the flight should be cancelled.