4)原因状语从句 because-“因为”,侧重从句内容; since-“由于”,“既然”,侧重主句内容; as-“由于”侧重主句内容; now that-“既然”=since 5)目的状语从句 so that-“为了…”,不能放在主句之前; in order that-“为了…”,可放主句前面; 如:She didn't move to the suburb so that/in order that she could look after her mother. In order that she could look after her mother,she didn't move to the subur B. 6)结果状语从句 so…that-“如此…所以…” such…that-“这么…所以…” so that-“结果…” so-“所以…”,引导并列句表结果; 7)让步状语从句
whether…or“无论是否…”
8)方式状语从句 as-“正如…,正像…,按照…”=like.
like-“像…,按照…”=as 9)比较状语从句 as…as-“和…一样” not as/so…as-“和…不一样”(形容词或副词用原级) than-“比…更…”,形容词或副词用比较级;
复合句就是带有从句的句子【一个句子中不仅仅有主句的主谓,还有了另一个句子来充当句子的成分】 比如说定语从句:This is an apple that I have eaten. 这个句子中除了This is an apple.这个主句以外还有I hava eaten.这样一个从句来做an apple的定语。