许多句子在描述一个人或一件物品时往往会出现一系列修饰语;动词的修饰语, 即副词往往也会几个同时使用,构成平行结构,平行结构要求语法结构须保持一致,如:

1.系列动词:
After school, we sang, danced and played the piano in the classroom.

2.系列形容词:
She is slim, tall, blond and beautiful.

3.系列副词:
The students are listening to me carefully and eagerly.

平行结构不仅包括动词,形容词,副词,也包括分词,不定式,动名词,名词短语和句子等的平行用法,务必提高辨别力。