作副词 ①大约，左右。如：There are about 30 students on the playground. 操场上大约有30个学生。②将要，将近。如：I’m about ready. 我快准备好了。③到处，各处。如：The children are running about. 孩子们到处乱跑。(表示动向)People are sitting about on the grass. 人们在草地的各处坐着。(强调位置)作介词①在……到处；在……各处。如：He is walking about the town. 他在城镇到处走。②关于；对于；有关。如： I am going to read a book about...
