托福阅读：从句例子整理

　　和谐英语网为同学们整理了托福阅读：从句例子整理，供考生参考学习。

　　Therefore，if the Earth began as a superheated sphere in space, all the rocks making up its crust may well have been igneous and thus the ancestors of all other rocks.

　　(特殊结构may well have been——可能是)

　　因此，如果地球开始时是太空中一个过热的球体，那么所有组成地壳的岩石都可能是火成的，因此成为所有其他岩石的祖先。

　　解析：

　　主句：all the rocks may well have been igneous and thus the ancestors of all other rocks

　　从句1：if the Earth began as a superheated sphere in space

　　从句2：making up its crust

　　主句中两个宾语部分igneous和the ancestors of all other rocks并列

　　从句1作为条件状语从句，修饰主句

　　从句2非谓语动词后置修饰主句中的主语rocks

　　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 possible 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 birds are 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 + B

　　SVO=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,n2—n1=n2

　　S,n,VO.=S,引+svo,VO

　　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。

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