2017考研英语语法小讲：插入语从句

谈及插入语从句在这里就会自然的提出两个问题。第一，间隔的位置一般位于什么哪里?第二，插入语一般由什么东西构成?

在文章中看得最多的情况就是

1) 主谓分隔：Rose, a young American poet, is brilliant. (被同位语隔开)

Susan, I suppose, finds the right way to go.(被插入语隔开)

2) 复合谓语分隔：You might at least offer to help. (被状语隔开)

3) 动宾分隔：They estimated in the newspaper the costs of health care.(被状语隔开)

4) 固定搭配分隔：They thought in a systematic way about the problems.(被状语隔开)

5) 连词与后续部分分隔

在考研真题中这种情况非常多。比如，What is hard to establish is whether the productivity revolution that the business assume they are presiding over is for real.中they are presiding over 就是一个主谓结构的插入语，隔开了主谓部分。

另外，这种情况在翻译真题出的频率也很高：Whorf came to believe in a sort of linguistic determinism which, in its strongest form, states that language imprisons the mind.在这里in its strongest form这个介词短语讲定于从句的引导词与定从隔开了。

自然而然，第二个问题来了，到底什么东西做插入语呢?

首先要说明一点就是插入语的成分问题，它是一个对句子的内容补充、添加、限制或者解释说明，并不是句子的独立语法成分，在阅读时可以跳读来把握句子整体结构。

一般说来由以下三个层面来做插入语，

第一从词的层面比如副词：consequently, however,等。This view, however, seems to be wrong.

第二个层面短语

如不定式短语to tell you the truth, to be frank等，或者for example也是

Mr. McWhorter’s academic specialty is language history and change, he sees the gradual disappear of “whom”, for example, to be natural……这个地方for example 所处的位置阻碍了同学们对于这个宾语和宾补的理解，增加了该句的难度，而这一点往往是考研的重点。

第三个层面就是句子层面了，比如as we know it, what we call it

He is what we call it a walking dictionary.