keep up与keep on的区别 keepup与keepon有什么不同

1、keep on后面接动名词。
she kept on working although she was tired.
她虽疲劳但仍继续工作。
2、keep up后面接名词。
例句： the enemy kept up their bombardment day and night.
敌军日夜不停地狂轰滥炸。