"the enemy attacked at dawn"
"a soldier must be prepared to kill his enemies"
"he viewed lawyers as the real enemy"
"they had been political foes for years"
误 We must draw a clear line between enemies and ourselves at all times.
正 We must draw a clear line between the enemy and ourselves at all times.
析enemy泛指“敌人”或“敌军”时,属集合名词,应该用单数形式来表示复数意义,且前面需用定冠词the。