当一个物体具有唯一性时，必须用the，比如：the earththe moonthe sunthe Alpsthe Biblethe Axis当一个物体被第二次提及时，也得用the，就不举例了。另外还有一些固定用法，如：the American Dreamthe ancientsthe apple of one's eyethe arm of fleshthe atomthe author of evilthe autumn of one's lifethe awkward agethe Barthe beaten paththe beginning of the endthe best pick of the basketthe Blue and the Gray
山水平川
