the massification of the universities 和 the idea of life long learning 这两个逗号内的都是插入语吗?还是有别的什么作用? institutions 为什么后面要加破折号呢?
This doubt seems mainly to be due to the development of the new technology,massification of the universities, the idea of life-long learning ,the growing competition from other learning institutions -and (This doubt 省略) may be also because of the strong specification that we are now experiencing in most of fields of research.
解答:【1】the development of the new technology,【2】massification of the universities,【3】 the idea of life-long learning ,【4】the growing competition from other learning institutions 为4个并列名词短语作due to的宾语成分,and前面破折号其用来解释前面的原因作用。
句子主干为:“This doubt seems maily to be+due to 名词短语(1)+名词短语(2)+名词短语(3)+名词短语(4)-and this doubt may be also+名词+that 定语从句”
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