GRE难句典型结构2

1.省略的几种情况

1.1 重复的成分

The correlation of carbon dioxide with tempreture, of course, does not established whether changes in atmospheric composition caused the warming and cooling trends or were cased by them.

二氧化碳和温度之间的关系并没有建立，究竟是空气成分的改变造成了气候变冷变热的趋势，还是气候变冷变热的趋势造成了空气成分的改变。

The correlation of carbon dioxide with tempreture, of course, does not established whether changes in atmospheric composition caused the warming and cooling trends or ( changes in atmospheric composition ) were cased by them.

1.2 让步转折的省略

Although many of these historians have accepted the earlier assumption that loyalists represented an upper class, new evidence indicates that loyalist, like rebels, were drawn from all socioeconomic class.

 1.3 定语从句引导词的省略

Because the potential hazards ( pollen grains are subject to / as they are transported over long distances ) are enormous, ......

hazard -vt:赌运气

           -n:危险，冒险

pollen -n:花粉

         -vt:传递花粉给......

grain  -n:颗粒

In order to understand the nature of the ecologist's investigation (生态学家研究的本质), we maythink of the density-dependent effects on growth parametersas the "signal"  （that） ecologists are trying to isolate and interpret,......

1.4 定语从句中的引导词与系动词同时省略，变成后置定语

qualities such as "the capable for hardwork" essential in producing wealth

qualities such as "the capable for hardwork"( that is ) essential in producing wealth

这种省略的结果，就是形容词+介词结构被放在名词之后充当后置定语。关键是介词结构的影响。