英语语法：句型结构之插入语
插入语
插入语是对句子的额外补充说明，是句子主体内容之外的成分，用逗号或者破折号把插入语和主体内容隔开。虽然处于句子内部，但是插入语的存在并不影响句子的结构。插入语可与是副词、动宾短语、介词短语、动词不定式短语、动词分词短语，也可以是各类从句。
副词作插入语
This is done by a great number of ring-shaped air jest on the bottom of the craft .It “flies”, there-fore, but it cannot fly higher.
通过船底的许多圆形喷气嘴可以实现这一目的。因此，船就“飞”起来了，但飞得不高。
动宾短语作插入语
Smoking, it is believed, is responsible for 30 per cent of all deaths from cancer and clearly represents the most important preventable cause of cancer in countries like the United Stated today.
有人认为，吸烟应该对癌症死亡总数的30%负责，在今天像美国这样的国家里，显然是最重要的可预防致癌因素。
“hypotheses”, said Medawar in 1964 ,“are imaginative and inspirational in character.”
梅达沃在1964年曾说过：“假设在性质上是一种想象和灵感。”
The Siriono, Holmberg later wrote, led a “a strikingly backward”existence.
西里奥诺人-霍姆勃格后来这样写道---过着一种“落后得令人吃惊的”生活。
The long-buried past, it seems, offers hope for the future.
深埋已久的过去，似乎在为未来提供希望。
介词短语作插入语
Democracy is ,among other things ,the ability to say “on”to the boss.
民主的力量之一，就是可以向老板说“不”。
Robots are beginning to be seen, although to a less degree, in other industries as well.
机器人也开始出现在其他工业部门中，虽然应用的程度较小。
We, for our part, are obsessed by the problem of how to render the basic facts of cohabitation simpler and more reasonable, in order that unhappy marriage may less frequently result.
就我们而言，感到困扰的问题是：如何使两性同居变得较为简单和合理，以便少造成些怨偶婚姻。
不定式短语作插入语
It is said that the blood poison is ,so to speak, a newer product from an improved formula。
据说，血液毒液不妨说是经过改良配方制成的较新产品。
动词分词短语作插入语
Robots, becoming increasingly prevalent in factories, and industrial plants throughout the developed world, are programmed and engineered to performed industrial tasks without human intervention.
机器人在所有发达国家的工厂和工业生产部门得到日益普遍的应用，人们通过编程和设计使其在无人干预的条件下完成工业生产任务。
For this reason there is on risk to the customer in the modern practice, adopted by some banks, of printing the customer’s name on his cheques.
由于这个原因，通过有些银行采用的现代方法，把客户的名字印在支票上，客户就不会冒什么风险了。
从句作插入语
It is important, if one does not wish to inconvenience and to bore one’s friends, not to tell lies.
如果一个人不希望给朋友带来不便和烦恼，不说谎很重要。
The biggest disparity and growing gap was in the area of spending on research and development, which ,while it decreased for developing countries, more than doubled for the industrialized countries.
最大的不同和日益加大的差距在研究和发展的经费投入方面，发展中国家在此项上削减，而工业化国家在此上的经费超过了发展中国家的两倍。
The problem ,as I see it ,is that airport expansion and more flights will negatively affect the local economy.
在我看来，问题在于机场的扩建和更多的航班将会给地方经济带来负面影响。
Corporate crime is crime which ,as the name suggests, is connected with companies, with business organizations.
企业犯罪，顾名思义，和公司有关，和商业组织有关。
