分词结构代替原因状语从句As I was anxious to please him,i bought him a nice present=Being anxious to please him,I bought him a nice present.Because so many people were absent,We decide to put the meeting off=So many people being absent,We

分词结构代替原因状语从句As I was anxious to please him,i bought him a nice present=Being anxious to please him,I bought him a nice present.Because so many people were absent,We decide to put the meeting off=So many people being absent,We
分词结构代替原因状语从句
As I was anxious to please him,i bought him a nice present=Being anxious to please him,I bought him a nice present.
Because so many people were absent,We decide to put the meeting off=So many people being absent,We decided to put the meeting off.
这里为什么要用Being anxious ,being absent 不直接用absenting
只有现在分词能代替原因状语从句?还是.看主动被动来决定是用现在分词还是过去分词...如果过去分词或者不定式可以做原因状语从句 麻烦举几个例子

分词结构代替原因状语从句As I was anxious to please him,i bought him a nice present=Being anxious to please him,I bought him a nice present.Because so many people were absent,We decide to put the meeting off=So many people being absent,We
因为anxious 和 absent 两个单词都是形容词,不是动词,而动词短语可以代替状语从句,因此加了being 联系动词,构成动词短语being anxious to ...
如: As he was ill, he didn't go to school
= Being ill, he didn't go to school
As he was nervous, he stood there saying nothing.
=Being nervous, he .
用现在分词还是过去分词要看主句的主语
Seeing from the mountain, I can have a good view of the village.
Seen from the mountain, the village is beautiful.,
这两句中,前面的一句用的是现在分词,因为是主语“I" 看的,用主动；而后句,主句的主语是village, 看就是被看了. 分词的主被动是由主句的主语决定的.

一、分词短语用作原因状语并不局限于现在分词。究竟用现在分词还是过去分词，需要看分词与其逻辑主语的关系。如果逻辑主语是分词的行为实施者，用现在分词；如果逻辑主语是分词行为的受事者或行为的对象，则用过去分词，如：
* Knowing that it was going to rain, he decided not to go out. 他因为知道要下雨，决定不外出。
（=...

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一、分词短语用作原因状语并不局限于现在分词。究竟用现在分词还是过去分词，需要看分词与其逻辑主语的关系。如果逻辑主语是分词的行为实施者，用现在分词；如果逻辑主语是分词行为的受事者或行为的对象，则用过去分词，如：
* Knowing that it was going to rain, he decided not to go out. 他因为知道要下雨，决定不外出。
（= Because he knew that it was going to rain, he decided not to go out.）
可以看出，分词 knowing 的行为者就是它的逻辑主语 he，因此用现在分词。
* Inspired by his classmates, he has decided to go and work in the grass-root. 由于受到其他同学的鼓舞，他决定到基层工作 。
（= Since he was inspired by his classmates, he has decided to go and work in the grass-root）
显而易见，逻辑主语 he 是分词 inspired 对象，因此用过去分词。这一点可以从括号中改写的 since 从句中的 he was inspired 看出。
二、 关于为什么要用Being anxious, being absent 而不直接用absenting 的问题
1. Being anxious to please him, I bought him a nice present.中的anxious 是形容词，being anxious 意思是逻辑主语 I“呈现出焦虑的样子”，当然要用现在分词。其实直接用形容词短语表示也可以：
I bought him a nice present，anxious to please him。 （形容词短语用作陪衬性状语）
2. So many people being absent, we decided to put the meeting off.
* So many people being absent 是分词独立主格结构，其中 So many people 是逻辑主语，句子主语 we 与该短语中分词 being absent 没有逻辑关系。由于 being absent 是 该结构中逻辑主语So many people 是逻辑主谓关系，因此也用现在分词表示。
* 与上题的 anxious 不同的是 absent 既可以作形容词也可以用作动词。但是作为动词，absent 是及物的，必须跟有宾语。如果要把这个句子用 absenting 表示，只能改写为：
So many people absenting themselves，we decided to put the meeting off.

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