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1、智课网 TOEFL备考资料托福阅读中句子结构的经典剖析在托福阅读中，有很多小伙伴对它的句子结构很迷茫，剪不断，理还乱。那么，智课教育萌萌哒小编来帮助大家对它们进行一一剖析。一、英语句子结构的原则1、谓动单一性原则 在一个句子里，有且只有一个谓语动词。2、主句单一性原则 在一个句子中，有且只有一个主句。(从句可以有若干个)二、三大从句1、名词性从句 主语从句 宾语从句 同位语从句引导词 (what/how/that/why/whether)结构 主语从句what+VO=n. for eg.?what+SV=n. What you said is right.形式宾语 Make it possib
2、le for sb.to do ?that/how/why/whether+SVO=n. That the ancestors of birds are dinosaurs is known.It is known that the ancestors of birdsare dinosaurs.(形式主语居多 )*形式主语和强调句的区别形式主语 It + v + (that +SVO)=n.n.=it强调句 It is/was + A + that + BSVO=A+B而且通常情况下 It is/was是强调句同位语从句同位语的实质 n1,n2n1=n2S,n,VO.=S,引 +svo,VO
3、前面的成分不应当在后面充当成分。The fact, that the ancestors of birds are dinosaurs, is known.可接同位语的名词多为抽象名词，例如：view/idea/suggestion/fact/reason/conclusion*同位语和定语从句的区别同位语的句子中，前面的成分不应当在后面充当成分。 The fact, that the sun is round.定语从句中，引导词充当成分。The book, that you bought for me. “that”充当宾语。ExampleIt is generally accepted t
4、hat the single super continent known as Pangaea indeed existed,that Pangaea subsequently broke apart into two giant pieces, Gondwanaland in the south andLaurasia in the north, and that the continents attached to the various crustal plates separatedand drifted in various directions.人们普遍接受，Pangaea 以一个
5、特别大的陆地形式存在，后来他被分为两个大块，在南边的Gondwanaland 和在北边的Laurasia，他和那些在不同地壳上的大陆分开了并且向不同方向上漂移。*如何找出复杂句中的谓语?先找引导词，然后去掉随后的动词，还有动词的话，这个动词就是谓语。2、形容词性从句= 定语从句引导词 (1)that/which/who(whom)(代词性)(2)whose/when/where(非代词性 )结构 (1)that/which/who(whom)=S+VO=a.This is pig that/which is very fat.(1)that/which/who(whom)=O+SV=a. 因为
6、代词性的引导词可以充当主语或宾语This is the pig that/which I ate.(作宾语可省略引)This is the pig from which I make fun.引导词前的介词取决于后面的动词this is the pig,which is very fastthis is the pig, (which)I ate.This is the pig, from which I make fun.(2)whose/when/where(非代词性 )+SVO=a.The book, whose cover is red, is quite interesting.Th
7、is is the place where(=in which 定语从句) I grew up. When 用在后面也可能是状从,也有可能是定从。*具体分析举例In his hypothesis that he developed based on it看上去该句的based 是一个n-ed的形式，但是她又是修饰谁呢?In his hypothesis() he developedthat based on it.因此可以看出，based 修饰that，而在此句中，that指代 hypothesis.*形容词性从句的省略当 that/which在定语从句中充当宾语时，可将其省略。 This i
8、s the pig that/which I ate.This is the pig I ate.当 that/which在定语从句中充当主语时，且从句的谓语动词为be动词时，可将其同时省略。The house, which was built in 1919,was destroyed.The house, built in 1919,was destroyed.*个别情况下，which/as在引导定语从句时，也指代前面整个一句话。As the plates drifted, they may have diverged, which(指代前面一句话) was associated with
9、the spread of the seafloor, or they may have converged, which(指代前面一句话) resulted incollision, subduction, and mountain building.*系表倒装主系表结构 变成 表系主 结构成为系表倒装只限于介词词组在句首时1、My hometown lies in Jilin province.In Jilin province lies my hometown.2、A,B,C.are among the species of seabirds.Among the species of s
10、eabird are A,B,C.3、副词性从句 =状语从句引导词 when/though/while/although 结构 when+s+v+adj/v-ing/v-ed,SVO.When he was young, Jack was always beaten by his father.省略的条件 s=S v=be省略 When young, Jack was always beaten by his father.省略 Other(联系同一类的名词，也就是说前面提到了chemical defenses) possible chemicaldefenses, while (they are 省略) not directly toxic to the parasite, may inhibit some essentialstep in the establishment of a parasitic relationship. For example, glycolproteins in plant cellwalls may inactivate enzymes the degrade cell walls.希望大家看完后脑海里对句子结构有一个大概的轮廓。并且能够灵活运用于考试中。更多海量信息敬请关注本文来源:
