必修三以及必修四材料
(2) vi./vt. (+oneself) show good manners; conduct oneself well 表现良好 行为良好 表现良好; Children, please ______________________! behave (yourselves) 孩子们, 规矩些! 孩子们 规矩些 (3) vi. (指机器等)运转或性能良好 指机器等) 我的摄像机自从修好后一直很正常. 我的摄像机自从修好后一直很正常. My camera ________________________ since has been behaving well it was repaired.