所谓“独立主格结构”实质上就是带有自己主语的非限定分句和无动词分句。它貌似独立,实际上还是一种从属分句。 独立主格结构在句中通常用作状语,表示时间、原因、条件、伴随情况等。它可位于句首或句末,一般用逗号分开,但也有用破折号的,例如:The room wasin chaos-dirty clothes strewn on the floor,cosrmetics scattered over the dress, The so-called “independent main frame structure” is essentially an unqualified clause and an indifferent clause with its own subject. It looks like it is independent. It is actually a subordinate clause. The independent main lattice structure is often used as an adverbial in a sentence, indicating time, reason, condition, and concomitant situation. It can be located at the end of a sentence or at the end of a sentence. It is usually separated by a comma, but it also has a dash. For example: The room was in chaos-dirty clothes strewn on the floor,cosmetics scattered over the dress,