2012考研必备：考研英语语法精要(36)
6.比较从句的倒装as, than引导的比较从句中，如果主语是名词短语且较长，经常采用倒装结构(不倒装也可以)。注意：这种结构主语一般为名词，如果是代词则不倒装。如：
Hydrogen burns much more cleanly than do other fuels and is easy to produce.
Today’s electric cars cannot go as fast as gasoline-driven vehicles because the battery does not offer the same amount of energy as does gasoline combustion.
Reading is to the mind as is exercise to the body.
(1)如果谓语动词是单个实义动词，倒装时需根据人称和时态加助动词do。如：
Little did we expect that he would fulfill his task so rapidly.
(2)考生要广义理解“句首”的概念，注意从句的句首和并列分句的句首均为句首。如：
Suddenly, Gallup’s name was on everyone’s lips; not only was he the prophet of the moment, but it was generally believed that he had founded a new and most important method of prediction.
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