keep on 和 keep up有什么不同之处吗?意义?用法

keep up
v.
不低落, 维持, 继续
keep on
v.
继续, 穿着...不脱 两者都表示“保持”，keep on后面接动名词，keep up后面接名词

keep on
1. 继续
eg. He kept on talking.
他讲个不停。
2. 继续雇用
eg.He kept Bob on as a manager.
他继续留用鲍勃当经理。
3. 继续拥有
eg.She'll keep the apartment on through the summer.
整个夏天她将继续租用那间公寓。
keep up
1. (使)不停止
eg.Rain kept up all day.
雨下了一整天。
2. 保持
eg.He kept up a correspondence with Tom.
他和汤姆保持通信联系。

keep up:
保持,继续,维持
例句与用法:
1.The enemy kept up their bombardment day and night.
敌军一直日夜不停地狂轰滥炸.
2.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.
3.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.
4.I can't keep up with all the changes in computer technology.
计算机技术的各种改进有些我已跟不上了.
5.Workers' incomes are not keeping up with inflation.
工人的收入赶不上通货膨胀.
6.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.
7.Slow down I can't keep up (with you)!
慢点,我跟不上（你）了!
8.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:
vt.继续进行(接连,反复,继续)
例句与用法:
1.Keep on past the church; the stadium is about half a mile further on.
一直向前走过了教堂,约莫半英里就是体育场.
2.I will mend the lamp just don't keep on at me about it!
我一定修这个灯－－别再跟我唠叨这件事了!
3.She kept on working although she was tired.
她虽疲劳但仍继续工作.
4.The rain kept on all night.
雨彻夜不停.
5.We're planning to keep the cottage on over the summer.
我们打算夏天继续租那座别墅.
6.He does keep on so!
他就是这样爱唠叨!
7.You don't need to keep your hat on indoors.
在室内不必戴 帽子了.
8.He's incompetent and not worth keeping on.
他庸碌无能,不值得留用.