2015年卫生类职称英语考试语法独立主格结构
2015-02-28 09:08 来源：医学教育网
2015年卫生类职称英语考试语法独立主格结构：
此独立形式只是一个小短语，而不是主谓完整的简单句，又称之为独立分词构句。当分词意义上的主语不是主句的主语时，必须在分词前保留意义上的主语，否则语意不通。
独立主结构形式可用以表时间，理由，条件，伴随状态等。
He lay on the grass,the sun shining upon him.
= He lay on the grass,and the sun was shining upon him.
Weather permitting,I'll start tomorrow.
= If weather permits,I'll start tomorrow.
School being over,the boys went home.
= When school was over,the boys went home.
The sun having set,we arrived at the station.
= After the sun had set,we arrived at the station.
重点：当独立主格结构的主语表示“一般人”，如：we,one,you时，主语可省略，此用法常用于下列表达方式中：
generally speaking 一般来说
strictly speaking 严格地说
talking of …… 谈到
speaking of …… 说到
judging from …… 由……来判断
taking all things into consideration 把一切都考虑在内
considering …… 考虑到……
[示例]：
If we judge from his face,he must be ill.
= Judging from his face,he must be ill.
He has lots of books if we consider that he is young.
= He has lots of books,considering that he is young.
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