2015年衛(wèi)生類職稱英語考試語法獨立主格結構：

此獨立形式只是一個小短語，而不是主謂完整的簡單句，又稱之為獨立分詞構句。當分詞意義上的主語不是主句的主語時，必須在分詞前保留意義上的主語，否則語意不通。

獨立主結構形式可用以表時間，理由，條件，伴隨狀態(tài)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.

重點：當獨立主格結構的主語表示“一般人”，如：we,one,you時，主語可省略，此用法常用于下列表達方式中：

generally speaking 一般來說

strictly speaking 嚴格地說

talking of …… 談到

speaking of …… 說到

judging from …… 由……來判斷

taking all things into consideration 把一切都考慮在內

considering …… 考慮到……

[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.