由其名称亦可了解其结构之主要特点如下:
1、
宾语从句——在句子中作宾语,相当于主句
谓语动词的受词:
She believed (that) she is right on the matter.
2、
定语从句——做为主句中名词的定语,有限定式及非限定式两种。二者的区别在于其间是否由逗号分隔,无则是限定式,有便为非限定式:
She believed the reason that she was absent from meeting yesterday afternoon must be acceptable anyhow.
3、状语从句——作为主句的状语构成部分,通常分作十类:
时间状语从句;地点状语从句;
原因状语从句;条件状语从句;目的状语从句;
让步状语从句;比较状语从句;程度状语从句;方式状语从句;结果状语从句。即修饰整个主句,亦可修饰主句中的某一成分,如谓语动词等:
She is so powerful that no one dare to offer any advice to her.