behind time一短语意为"晚了",而behind the times意为"落后于时代"。behind是介词同时又是副词,如Come out from behind the door(介词). He's a long way behind(副词). He fell behind with his classmates(副词). [误] He missed the class because he was behind the time. [正] He missed the class because he was behind time. [析] behind time一短语意为"晚了",而behind the times意为"落后于时代"。behind是介词同时又是副词,如Come out from behind the door(介词). He's a long way behind(副词). He fell behind with his classmates(副词).