common 含有“平常，普通，常見，不足為奇”等意思，側重於缺少顯著或異常的特徵，特別說明某物因司空見慣而普通。如： Colds are common in winter . A dog is one of the commonest pets . This flower is common in spring . ordinary 意為“正常的，通常的，平常的，普通的”，指由於與常規、習慣、一般標準或品質相同而普通，無特別驚人的性質。如： He is an ordinary - looking man . It was an early morning in summer . In the streets , sleepy - eyed people were moving quickly , heading towards their jobs . This was the beginning of another ordinary day in New York City . 一大早睡眼惺惺的人們匆匆趕路，前去上班，沒有任何異常的跡象，這又是紐約城一個平常的日子的開始。
common 含有“平常，普通，常見，不足為奇”等意思，側重於缺少顯著或異常的特徵，特別說明某物因司空見慣而普通。如： Colds are common in winter . A dog is one of the commonest pets . This flower is common in spring . ordinary 意為“正常的，通常的，平常的，普通的”，指由於與常規、習慣、一般標準或品質相同而普通，無特別驚人的性質。如： He is an ordinary - looking man . It was an early morning in summer . In the streets , sleepy - eyed people were moving quickly , heading towards their jobs . This was the beginning of another ordinary day in New York City . 一大早睡眼惺惺的人們匆匆趕路，前去上班，沒有任何異常的跡象，這又是紐約城一個平常的日子的開始。