1、状语从句中的谓语动词是系动词be时:1.1、当从句主语与主句主语相同时，只要去掉从句中的连接词与主语并把be改为being. 即可。
As he is a tailor, he knows what to do with this material.→Being a tailor, he knows what to do with this material.1.2、从句的主句主语与从句主语不同时，只要保留从句的主语，其它变化同以上1.1。
As he is still a child, you shouldn't be too hard on him.→He being still a child, you shouldn't be too hard on him.1.3、当从句是否定句时，只要在being 前加否定词not ，其它变化同以上1.2。
As he was no tall enough, he couldn't reach for the apple.→No being tall enough, he couldn't reach for the apple.2、当从句的谓语动词是进行时态（现在进行时态或过去进行时态）时:2.1、当从句主语与主句主语相同时，只要去掉从句中的引导词与主语并去掉助动词be保留现在分词即可。
有时为了强调进行状态,亦在分词前保留being.While he was reading the book, he nodded from time to time.→While reading the book, he nodded from time to time2.2、当从句与主句的主语不同时，除保留从句主语外，其他变化同以上2.1When he was giving a telephone call, his wife was reading a novel.→He giving a telephone call, his wife was reading a novel2.3、当从句是含not的否定句时，只要在being 前加否定词not ，其它变化同以上1.1与2.2 As Tom is not working in his office, No one receives the telephone.→Tom not working i n his office, no one receives the telephone.3、当从句中的谓语动词为一般时态(一般现在时与一般过去时)的实义动词时：3.1、当从句主语与主句主语相同时，只要去掉从句主语并将实义动词改为现在分词即可Look round when you cross the street.→Look round when crossing the street.3.2、当从句与主句的主语不同时，只要保留主语，其他变化同以上3.1When they left the airport, we waved again and again to them.→They leaving the airport, we waved again and again to them.3.3、当从句是含not的否定句时，只要在现在分词前加not，其他变化同以上3.1与3.2As he didn't know anything about the accident, he went to work as usual.→.Not knowing anything about the acc ident, he went to work as usual.4、当从句的谓语动词是一般时态(一般现在时与一般过去时)的被动态时：4.1、当从句主语与主句主语相同时，只要去掉从句中的连词与主语并去掉be保留过去分词即可。
As the teacher was surrounded tightly by a group of students, he couldn't get away.→Surrounded tightly by a group of students the teacher cou ldn't get away.4.2、当从句与主句的主语不同时，只要保留主语，其他变化同以上4.1A. As the car was trapped in the sand, we had to go for help.→The car trapped in the sand, we had to go for help.4.3、当从句是含not的否定句时，只要在过去分词前加not外，其他变化同以上4.1与4.2 As he was not killed dead in the field, he escaped at the very night.→Not killed dead in the field, he escaped at the very night.5、当从句的谓语动词是完成时态(现在完成时与过去完成时)时：5.1、当从句主语与主句主语相同时，只要去掉从句中的连词与主语并将had/has/have改为having即可。
After the writer had finished the book, he tried to find a publisher.→Having fi nished the book, the writer tried to find a publisher.5.2、当从句与主句的主语不同时，除保留从句主语外，其他变化同以上5.1As the storm had destroyed their hut, they had to live in a cave.→The storm having destroyed their hut, they had to live in a cave.5.3、当从句是含not的否定句时，除在having前加not外，其他变化同以上5.1与5.2。
As he had not received a reply, he decided to write again.→Not having received a reply, he decided to write again.6、当从句中的谓语动词是被动语态完成式时：6.1、当从句主语与主句主语相同时，只要去掉从句中的连词与had been/have been/has been 并保留过去分词即可，有时也可只去掉从句中的连词与主语并将从句中的have/had/has 改为Having，这种方式是为了强调完成。
If the trees had been given more attention, they could have grown better.→(Having been) Given more attention, the trees would have grown better.6.2、当从句与主句的主语不同时，只要保留主语，其他变化同以上6.1Although the sentence had been explained again and again, the students didn't seem to understand it yet.→The sentence(having been) explained again and again, the students didn't seem to understand it yet.6.3、当从句是含not的否定句时，只要在过去分词前加not或在having been 前加not外，其他变化同以上6.1与6.2As the old man hadn't been taken good care of, he wasn't living a happy life.→Not (having been) taken good care of, the old man wasn't living a happy life.7.当句子谓语是一个由and连接的并列动词时,为了强调两个动作同时发生,只要去掉and并将另一个动词改为现在分词即可.They often sat in the shade and smoked a cigarette in the late afternoon.→They often sat in the shade in the late afternoon, smoking a cigarette.使用独立主格结构的几点注意1. 独立主格与状语从句的转换当状语从句的主语与主句的主语不是指同一个对象时，可用独立主格结构取代状语从句，但不再保留连词。
如：After class was over (=Class being over / Class over), the students soon left the classroom.下课后，学生很快离开了教室。
2. 不能省略being (having been)的情形在下列两种情况下，独立主格结构中的being（或having been）不能省略：(1)独立主格结构的逻辑主语是代词时。
如：It being Sunday, we went to church.因为是星期天，我们去了做礼拜。
(2)在There being＋名词的结构中。
如：There being no bus, we had to go home on foot.因为没有公共汽车，所以我们不得不步行回家。
3. 通常不用物主代词或冠词在“名词（或代词）＋介词短语”构成的独立主格结构中，一般不用形容词性物主代词和冠词。
如：Miss Smith entered the classroom, book in hand.史密斯先生走进了课室，手里拿着一本书。
比较with的复合结构：Miss Smith entered the classroom, with a book in his hand.4. 独立主格结构没有所有格形式The chief-editor arriving, we began the meeting. 主编来了，我们开始开会。
比较动名词复合结构：The chief-editor’s arriving made us very surprised.5. 独立主格的时态问题独立主格结构作时间或原因状语时，可用完成时，表示该动作发生在谓语之前。