history前面加了形容词,有时用冠词a,有时不加冠词,这要看情况而定。用下面这些形容词,而且又没有其他修饰成分,通常不加冠词,如:Chinese, common, dynastic, human, life, military, modern, natural, railroad, world; 但加了下面形容词,则一般要加冠词a,如:comprehensive, curious, eventful, family, general, glorious, lifelong, long, romantic, secret。