1、读音不同
keep on 【读音】 英[kiːp ɒn] 美[kiːp ɑːn]
To keep on as before.
要继续像以前那样。
keep up 【读音】 英[kiːp ʌp] 美[kiːp ʌp]
The high cost of raw materials is keeping prices up.
原料费用昂贵使得产品价格居高不下。
2、释义不同
keep up 保持 继续 维持 跟上(时代)
The house is becoming too expensive for them to keep up.
他们的房子维修费用贵得越来越修不起了。
keep on 反复地做； 继续进行
If not, should I keep on this path or go in another direction?
如果没有的话，那我应该继续坚持还是换一条道呢？
3、词语搭配不同
keep on词语搭配
（1）、You keep moving on 你只是继续前进
（2）、keep watch on 监视 ; 监督 ; 引申为从上监视着
（3）、keep sb on 继续雇佣某人 ; 使某人
（4）、keep straight on 一直走下去 ; 笔直的 ; 整齐的 ; 直的
（5）、Keep moving on 坚持住 ; 元气少女阿蓝桑 ; 元气已经无语了 ; 番鬼佬阿蓝桑
keep up词语搭配
（1）、keep up appearances 装门面(虚饰外表)...
（2）、keep up with 跟上
（3）、keep up with the joneses 赶上别人
（4）、keep one's chin up 不气馁
（5）、keep one's end up 精神饱满地对付...
（6）、keep up one's courage 鼓足one's勇气...
keep on doing sth持续做某事，keep up 保持，沿袭后接名词或代词，接代词时放在up前。
一、keep up
英 [ki:p ʌp] 美 [kip ʌp]
vi. 不减弱， （天气）持续不变; 保持; 保养; （使）不倒下; 保持不衰退;
拓展例句
1. If homeowners can't keep up the payments, they face foreclosure.
业主如果未能按时交房贷，就会面临丧失抵押品赎回权的危险。
2. If you don't keep up payments you could be evicted.
如果不继续交费，你会被赶出去。
3. He lengthened his stride to keep up with her.
他迈大步追上她。
4. The two saleswomen were busily trying to keep up with the demand.
那两名女售货员正忙着接待顾客。
5. Things are changing so fast, it's hard to keep up.
事情变化得太快了，很难跟上形势。
二、keep on
英 [ki:p ɔn] 美 [kip ɑn]
继续雇用; 继续前进; 继续穿着; 重复;
拓展例句
1. A fellow doesn't last long on what he has done. He's got to keep on delivering as he goes along.--Carl Hubbell, Baseball Player
靠过去完成的无法让人保有成功，必须在路上持续交出成绩。
2. They keep on muddying the waters by raising other political issues.
他们不停地提出其他政治问题，力图把水搅浑。
3. Ray will earn his keep on local farms while studying.
雷求学期间会在当地的农场干活赚取生活费。
4. He used to keep on at me about the need to win.
他以前总是跟我唠叨必须获胜才行。
5. Never keep on exercising if you have even the slightest chest pain.
即使你只感到很轻微的胸部疼痛，也不要继续锻炼。
keep up与keep on的区别：
一、后面接的词性不一样
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.
敌军一直日夜不停地狂轰滥炸.
二、意思不一样
1、keep up: 保持,继续,维持
例句：You're all doing a splendid job; keep up the good work!
你们干得都很出色, 要保持下去!
2、keep on: 继续进行(接连,反复,继续)
例句：She kept on working although she was tired.
她虽疲劳但仍继续工作。
三、都指保持时，保持的连续性不同
1、keep on 是中间间断后又继续做 ；
例句：Should i just keep on chasing pavements ?
或者坚持这条路？
2、keep up 是一直继续做
例句：I keep up correspondence with my college friends.
我一直跟我大学时代的朋友通信。
1、意思不同。
（1）keep up 意为“保持，跟上，不减弱…”。
例句：He lengthened his stride to keep up with her.（他迈大步追上她。）
（2）keep on 意为"坚持，继续…"。
例句：If so, then keep on doing whatever it is that you’re doing. 如果真的是这样，那么就继续做你现在做的一切——不管是什么继续下去。
2、用法不同。
（1）keep up不可以直接加动词表保持做某事，可将其视为不及物动词短语，常用于"keep up with…"或"keep …up"。
例句：The two saleswomen were busily trying to keep up with the demand.（那两名女售货员正忙着接待顾客。）
（2）keep on一般使用"keep on +doing /sth.","keep on at…"或"keep…on"，多种用法。
例句：Her coach encouraged her throughout the marathon race to keep on running. 她的教练在马拉松赛全程鼓励她继续不断奔跑。
扩展资料：
keep vt.保持；保留；遵守；阻止vi.（食品）保持新；保持健康n.保持，保养；供养，抚养；生活，生计；饲料；牧草
keep短语：
1、keep down 控制；使不升起；使留级；吞下药物
例句1：The prime aim is to keep inflation down.首要目标是抑制通货膨胀。
例句2：No matter what a woman tries to do to improve her situation, there is some barrier or attitude to keep her down. 女性无论如何努力去改善自己的处境，总会受到一些障碍或看法的压制。
2、keep off 避开,防止,挡住。
例句1：I managed to stick to the diet and keep off sweet foods.我努力做到了只吃规定饮食，不沾甜食。
例句2：The local police had warned visitors to keep off the beach at night. 当地警方告诫游客不要在夜间去海滩。
keep up与keep on的区别：
1、当表示反复发生的动作(注意：动作之间没有间隔)，两个短语可互换。如：
hey kept (on) talking about it. 他们一直在谈论此事。
My shoe laces keep (on) coming undone. 我的鞋带老是松开。
2、当表示持续的状态或连续不断的动作(注意：动作之间没有间隔)时, 通常只用 keep doing sth。如：
He kept standing during the meeting. 开会时他一直站着。
We kept hoping that they would have a chance to come to China some day. 我们一直希望他们什么时候有机会到中国来。
3、表示将一直在做的事继续做下去，通常只用 keep on doing。如：
Don’t give up; keep on trying. 别灰心，继续努力。
4. 有时若意义明确，keep on 后的 doing sth 可省略，而 keep 后却不能省略 doing sth。如：
The rain kept on for several days. 雨一连下了好几天。
扩展资料
柯林斯英汉双解大词典
keep on ( keeping, kept, keeps )
1、see keep
2、 PHRASAL VERB If you keep someone on, you continue to employ them, for example after other employees have lost their jobs. 继续雇用
例：
They concluded that firing him would be more damaging than keeping him on.
他们得出结论，解雇他会比留用他的损害更大。
keep up ( keeping, kept, keeps )
1、PHRASAL VERB If you keep up with someone or something that is moving near you, you move at the same speed. 跟上
例：He lengthened his stride to keep up with his father.他迈开大步跟上他父亲。
2、PHRASAL VERB To keep up with something that is changing means to be able to cope with the change, usually by changing at the same rate. 跟上 (变化)
例：The union called the strike to press for wage increases which keep up with inflation.工会号召罢工，要求工资增长跟上通货膨胀。
3、PHRASAL VERB If you keep up with your work or with other people, you manage to do or understand all your work, or to do or understand it as well as other people. 跟上 (工作进度等)
例：Penny tended to work through her lunch hour in an effort to keep up with her work.为了努力跟上工作进度，彭妮往往午饭时间也在工作。
4、PHRASAL VERB If you keep up with what is happening, you make sure that you know about it. 了解
例：She did not bother to keep up with the news.她不愿操心去了解新闻。
5、PHRASAL VERB If you keep something up, you continue to do it or provide it. 使继续下去
例：I was so hungry all the time that I could not keep the diet up for longer than a month.
我总是饿，所以我的节食一个月后就继续不下去了。
6、PHRASAL VERB If you keep something up, you prevent it from growing less in amount, level, or degree. 使不下降
例：The riders had to keep their pace up.骑手们必须保持速度不减。
参考资料：有道翻译：keep up、有道翻译：keep on
