所谓平行结构实质就是分层次描述，阅读部分经常出现“not only..., but also...”，“one..., the other...”，“some..., others...”等固定搭配对两层或多层语意进行描写，通过对这种常见结构的把握，考生就可以快速锁定答案。例如：
Many adults, poor and disillusioned with farm life, were lured to the cities by promises of steady employment, regular paychecks, increased access to goods and services, and expanded social opportunities. Others were pushed there when new technologies made their labor cheap or expendable.
The principal difference between urban growth in Europe and in the North American colonies was the slow evolution of cities in the former and their rapid growth in the latter. In Europe they grew over a period of centuries form town economies to their present urban structures. In North America, they started as wilderness communities and developed to mature urbanism in little more than a century.
In the past, biologists considered mushrooms and other fungi as a type of non-free plant. Today, however, they are most commonly regarded as a separate kingdom of living things.
本题中就不宜直接使用前文提到的“主语带主语”原则。代词出现的语句是被动句，因此“they”不再指代前文主语，而是指代前文中的宾语。那么“they”指代“mushrooms and other fungi”还是“non-free plant”呢?考生不必感动彷徨无助，口诀中已经明确指出，代词的单复数必然与原词单复数一致，因此正确答案只能是“mushrooms and other fungi”。
