傻大明白
跟不上[词典] unable to keep pace with; drag;[例句]我们如果不加强学习，就会跟不上形势。We can't keep abreast of the developing situation unless we study harder.编辑于 2017-05-18
婕哥大王
keep up 继续,坚持，一直继续做。
keep on 继续,保持，中间间断后又继续做。
扩展资料：
keep up例句与用法:
1、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。
2、Let's hope the sunny weather keeps up for Saturday's tennis match.但愿星期六网球比赛时还是这样的好天气。
3、You're all doing a splendid job; keep up the good work!你们干得都很出色, 要坚持下去!
keep on例句与用法:
1、The rain kept on all night.雨彻夜不停。
2、You don't need to keep your hat on indoors.在室内不必戴 帽子了。
3、 He's incompetent and not worth keeping on.
他庸碌无能, 不值得留用。
小快手337
keep up是保持,继续,维持,跟上（时代）的意思 keep on 是继续进行,并且强调是“继续”、“反复”、“接连” keep in则是限制、抑制,或是“使维持某种状态”
超级懒喵喵
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。
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;
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。
英 [ki:p ɔn] 美 [kip ɑn]
继续雇用; 继续前进; 继续穿着; 重复;
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。
若曦0518
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。
