英语语法：scientists have examined the benefits of a ...Scientists have examined the benefits of a concerted effort to study and practice music,as opposed to playing aMozart CD or a computer-based“brain fitness” game once in a while.请不

英语语法：scientists have examined the benefits of a ...Scientists have examined the benefits of a concerted effort to study and practice music,as opposed to playing aMozart CD or a computer-based“brain fitness” game once in a while.请不
英语语法：scientists have examined the benefits of a ...
Scientists have examined the benefits of a concerted effort to study and practice music,as opposed to playing aMozart CD or a computer-based“brain fitness” game once in a while.
请不要翻译这个句子,只是想请问下三个语法问题:
1 as opposed to分开理解的话,as是作句子什么成分?opposed又是什么成分?to xxx呢?
2 to 后面为什么是ing形式动词?
3 可见这个逗号即使没有也没什么关系,请问这里的逗号是什么用法,起什么作用?

英语语法：scientists have examined the benefits of a ...Scientists have examined the benefits of a concerted effort to study and practice music,as opposed to playing aMozart CD or a computer-based“brain fitness” game once in a while.请不
1 as opposed to分开理解的话,as 连词 opposed是过去分词 这是带连词的过去分词 短语 作状语 与句子主语 是主表关系 相当于 一个状语从句 = as they are opposed to...
to xxx是过去分词的状语
2 to 后面是ing形式 即动名词 作介词宾语 因为这里to 是介词 .be opposed to doing sth反对做某事
3 分词短语作状语 应该有逗号.

我搞错了。赞同goldsam的解释。
as opposed to.......在整个句子中是状语从句。as是连词，opposed是谓语动词，to是搭配opposed的介词。这里有一个状语从句的省略用法。当从句的主语是it，谓语动词中又含有系动词be 时 ，可以把it和系动词be一起省略。于是把状语从句的it is省略了。可见as不作先行词成分，只是连词，所以as引导状语从句。...

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我搞错了。赞同goldsam的解释。
as opposed to.......在整个句子中是状语从句。as是连词，opposed是谓语动词，to是搭配opposed的介词。这里有一个状语从句的省略用法。当从句的主语是it，谓语动词中又含有系动词be 时 ，可以把it和系动词be一起省略。于是把状语从句的it is省略了。可见as不作先行词成分，只是连词，所以as引导状语从句。

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1 as opposed to分开理解，as是连词，引导状语从句，这里省略了两词it is。完整的应是as it is opposed。显然，opposed是从句的谓语。to 是介词，与oppose搭配，构成谓语。
2 因为to是介词，不是不定式，所以后面是ing形式。
3 逗号没有也通，但一是句子较长，二是as连接的状，与主句的关系不太强，习惯而已。额，it is opposed...

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1 as opposed to分开理解，as是连词，引导状语从句，这里省略了两词it is。完整的应是as it is opposed。显然，opposed是从句的谓语。to 是介词，与oppose搭配，构成谓语。
2 因为to是介词，不是不定式，所以后面是ing形式。
3 逗号没有也通，但一是句子较长，二是as连接的状，与主句的关系不太强，习惯而已。

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