recognize

1.recognize在一般英汉词典里注作“认识”，实际是“见了某人而认出（他）”，是一时的动作。例如：As soon as I saw him, I recognized him.和As I have not seen him for nearly twenty years, I am afraid I should not recognize him if I met him today.说“我认识他五年了”和“我在五年前的一个晚上认识他”不可用I have recognized him for five years和I recognized him one evening five years ago来表达，该说I have known him for five years和I made his acquaintance one evening five years ago。

2.下面两句里的recognize意思不同：

• When he met her in the street, he could hardly recognize（认识）her because she was very much changed.
• When he met her in the street, he refused to recognize（招呼）her because he thought they were no longer friends.