keep on有坚持的意思。除此之外，keep on还有重复、继续、继续雇佣等含义。由于on是介词，因此keep on后面必须接名词、代词、动名词、名词短语以及名词性从句，表示继续做什么。
keep on有重复；继续；继续雇佣；坚持等含义。例句有：
1、A skeleton staff of 20 is being kept on.
留下了20名骨干人员。
2、He didn't come at all. It was silly of us to keep on waiting for him.
他根本没有来，我们傻等了他半天。
3、The practice is to keep on record any analysis of samples.
习惯上要把所有的样品分析记录在案。
4、You keep on amazing me, year after year, the same old ways.
你不断地给我同样的惊喜，年年如此。
5、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。
6、If he doesn't agree, just keep on at him until he does.
他不答应，你就跟他磨。
7、To know it's no use, but keep on doing it--there can be no greater folly than this.
知其不可而为之，愚不可及也。
8、If we keep on our way for another hour we should reach the village.
如果再继续向前走一小时，我们就到那个村子了。
9、This medicine will be effective if you keep on taking it for a time.
这种药连着吃下去一定会有成效。
10、Keep on reading the text until you've learned it by heart.
继续读课文，记住了才算数。
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