介绍一下现在分词做状语放句首
现在分词做状语，要求现在分词的主语和主句的主语一致，并且分词和主语是主动关系 比如：Seeing from the hill, I find the city is very beautiful. 这里的see和 I 是主动关系所以用现在分词并且see 的主语是I。
过去分词做状语也要求过去分词的主语和主句的主语一致，但是分词和主语是被动关系 比如：Seen from the hill, the city is beautiful.这里的see 和 the city 是被动关系，所以用过去分词 to do动词不定式做状语一般表示目的。
一般句子中能明显读出目的关系 比如：To learn English well，i should work hard。
一般这样的句子可以把状语放后面，读起来就比较顺了：I should work hard to learn English well。
用分词作状语的简单句
指句子的状语由分词充当比如现在分词作状语：Having finished our homework, we went out to play.过去分词作状语：Beaten by the girls' team, all the boy players felt upset.
分词做状语的句子举例（英语）
examples:1.He came in holding a box in his hand( holding a box in his hand在分词作伴随性方式状语）他进来了，手里拿个盒子。
2.Looked from the back she is like a young girl(looked from the back过去分词作方式状语）从后面看，她像个年轻的女孩。
3.helped by him I have made rapid progress.（helped by him 过去分词作原因状语）在他的帮助下，我取得了迅速的进步。
4.having finised my housework,I take a deep breathe.(having finised my housework现在分词的完成式作时间状语）干完家务活后，我深深地呼吸一下。
5.They went there hoping for a chance.( hoping for a chance 现在分词作目的状语）他们去那希望得到一次机会。
这两个用了现在分词作状语的句子有什么区别
现在分词被动形式和过去分词有时是一样的，而当一个动作已经完成的时候，就一定要过去分词，现在分词则是表示正在进行的动作。
这句中改成being followed也可以，因为是表示伴随状态例句详见薄冰英语语法，P354,过去分词与现在分词被动形式的比较
分词短语做状语
1. 分词作状语实际把状语从句简化。
简化的条件：其逻辑主语一定要与主句的主语保持一致。
While he was reading the book, he nodded from time to time. ----Reading the book, he nodded from time to time. Because he was shy, he didn’t come to the party. ----Being shy, he didn’t come to the party. As the book is written in simple English, the book is easy to read. ----Written in simple English, the book is easy to read. 2. 分词作状语时可分为以下几种形式：* doing ： 用来表示主动，且前后动作同时进行。
Returning home later, my friend learned that the police had been to the flat.* having done: 用来表示主动,且动作发生在主句之前。
Having seen the film before, I decided not to see it again.* being done: 用来表示被动,且前后动作同时进行。
Being questioned by the police, he felt frightened.* done: 用来表示被动且完成Destroyed in the storm, the house will be rebuilt.* having been done: 用来表示被动，而且强调动作持续 一段时间或次数。
Having been defeated three times, he had to give up.* 否定形式： not\\\/ never + 分词结构Not studying hard, he didn’t pass the test.Never having taken a plane before, he was nervous.3. 分词作状语如果前后主语一致可简化时间、条件、原因、结果和伴随等状语从句。
(条件)If you work harder, you will do better in the exam next time. ---- Working hard, you will do better in the exam next time. （时间） After I did my homework, I went back home. ----Having done my homework, I went back home. (伴随）He hurried to the station and hoped to catch the last train.---- He hurried to the station, hoping to catch the last train.。
(原因)Because my friend was frightened of losing his job, he said nothing to the police. ----Frightened of losing his job, my friend said nothing to the police. (结果) His parents were killed in the SARS epidemic and left him an orphan. ---- His parents were killed in the SARS epidemic, leaving him an orphan.
用分词作状语的简单句
指句子的由分词充比如现在分词作状语：Havingfinishedourhomework,wewentouttoplay.过词作状语：Beatenbythegirls'team,alltheboyplayersfeltupset.
什么情况下，句子开头用现在分词作状语，什么情况下，用过去分词，什么情况下，用to.
现在分词作状语通常是指现在的某种状态或持续的某种状态过去分词作状语是指被动或过去的状态to do点形式一般指将要去做或为了某种目的
