资源简介 2023年高中英语语法:名词性从句讲解及考点全攻略复合句之名词性从句讲解复合句由一个主句和一个或一个以上的从句构成,指的是含有两个或更多的主谓结构的句子,其中有一个(或更多)主谓结构充当句子的某一(些)成分,如主语、宾语、表语、定语、状语、同位语等。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。1)主语从句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。eg. What the baby want to do is not clear.除此之外,还会采用形式主语it句型:(1) It + be + 名词 + that从句(2)It + be + 形容词 + that从句(3)It + be + 动词的过去分词 + that从句(4)It + 不及物动词 + that 从句2)宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样,在句中可以作谓语动词或介词及非谓语动词的宾语。(1)由连接词that引导的宾语从句在demand、order、suggest、decide、insist, desire, request, command, doubt等表示要求、命令、建议、决定等意义的动词后,宾语从句常用“(should)+ 动词原形”。(2)用who,whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句,应注意句子语序要用陈述语序。(3)用whether或if引导的宾语从句,其主语和谓语的顺序也不能颠倒,仍保持陈述句语序。此外,whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether,不用if。3)表语从句在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样,表语从句位于连系动词后,有时用as if引导。其基本结构为:主语 + 系动词 + that从句。4)同位语从句同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导,可用于同位语从句的名词有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。eg. I have an idea that maybe we can go to Paris.名词性从句的十大考点全攻略Who / whoever, what / whatever等的用法区别一般说来,what/who等含特指意义,而whatever/whoever等含泛指意义,意为"无论什么/无论谁"。It is generally considered unwise to give a child ____ he or she wants.A. however B. whatever C. whichever D. whenever解析:答案是B,whatever引导一个宾语从句,并且作wants的宾语。这里的 whatever不能改成what,因为题意想表达的显然是"无论孩子要什么就给他/她什么事不明智的",具有泛指的概念。同时要注意,这里 whatever也不能改用no matter what,因为后者只能引导状语从句。比较下例:I can't remember at the moment who has said the words. (这里的who表特定的某人)Where, when, why等连接副词引导的名词性从句Where, when, why等连接副词也可以引导名词性从句,使用的关键是:这个词必须符合句子的逻辑要求。-I drove to Zhuhai for the air show last week.-Is that ____ you had a few days off A. why B. when C. that D. where解析:答案是A,why引导的从句作表语,同时why在从句中作原因状语。这里之所以选why,而不是when或 where等,唯一的依据便是句子的逻辑含义,及语境。"介词+who(m)引导的宾语从句"与"介词+ whom"引导的定语从句的区别介词后面的引导词用主格还是宾格,决定于它在宾语从句中作主语还是宾语。It was a matter of ____ would take the position.A. who B. whoever C. whom D. whomever解析:答案是A。这是一个含宾语从句的复合句,作介词of宾语的,是后面的整个句子,而不是宾语从句的引导词,由于这里引导词在从句中作主语,所以要用主格who(作宾语时自然要用whom)。名词性从句中有插入成分时此时应注意两点:一是从句仍然不倒装,而在插入成分上倒装;二是要注意主语的主格和宾格的选择。____ you have seen both fighters, ____ will win A. Since; do you think who B. As; who you thinkC. When; whoever D. Since; who do you think解析:根据上面的讲解,不难知道答案是D。其中do you think是插入成分,其余部分是宾语从句,作think的宾语;由于引导词在从句中作主语,所以要用主格who(不用whom)。引导词that的省略引导宾语从句时,that通常可以省略,但引导主语、表语和同位语从句时,that不能省。例如: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解析:该句中的从句作shows的宾语,是宾语从句,又因为从句中不缺主、宾语,所以只能用that引导;又因引导宾语从句时that可以省略,所以答案是C。同位语从句引导词where, when的用法特点说明先行词内容的同位语从句的引导词where, when与被说明的名词在概念上不一致。但引导定语从句的引导词却必须保持一致。试比较:1.Then arose the question ____ we were to get so much money.2.This the house ____ the great man Mao Zedong was born 110 years ago.A. where B. that C. about which D. in which解析:答案分别是1.A 2.A/D。先行词与where, when概念一致时,是定语从句,2题中的house与where同表地点,且这个关系副词where或when可以用"介词+which"的形式代替,所以答案A 和D都可以引导。1题中的question与where不表同一概念,可见是同位语从句,所以where不能改用"介词+which"的形式。名词性that-从句名词性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. 约翰说他星期三要到伦敦去。 表语:The fact is that he has not been seen recently. 事实是近来谁也没有见过他。 同位语:The fact that he has not been seen recently disturbs everyone in his office. 近来谁也没有见过他,这一事实令办公室所有的人不安。 形容词宾语:I am glad that you are satisfied with your job. 你对工作满意我感到很高兴。2)That-从句作主语通常用it作先行词,而将that-从句置于句末,例如: It is quite clear that the whole project is doomed to failure. 很清楚,整个计划注定要失败。 It's a pity that you should have to leave. 你非走不可真是件憾事。 用it作形式主语的that-从句有以下四种不同的搭配关系: a. It + be +形容词+ that-从句 It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明显…… b. It + be + -ed 分词+ that-从句 It is believed that… 人们相信…… It is known to all that… 从所周知…… It has been decided that… 已决定…… c. It + be +名词+ that-从句 It is common knowledge that… ……是常识 It is a surprise that… 令人惊奇的是…… It is a fact that… 事实是…… d. It +不及物动词+ that-分句 It appears that… 似乎…… It happens that… 碰巧…… It occurred to me that… 我突然想起…… 展开更多...... 收起↑ 资源预览