“Keep”有很多常用的固定词组，以下是一些常见的：

1. Keep on / keep doing：继续做某个事情；例句：Please keep on studying, you will succeed soon.（请继续学习，你很快就会成功。）

2. Keep up：保持不变；例句：We must keep up with the times.（我们必须跟上时代。）

3. Keep up with（某人/某事）：跟上（某人/某事）；例句：I have been trying to keep up with his steps.（我一直在努力跟上他的步伐。）

4. Keep going：继续前进；例句：Never give up, keep going!（永不放弃，继续前进！）

5. Keep in touch：保持联系；例句：Let's keep in touch after graduation.（毕业后我们保持联系。）

6. Keep an eye on：密切关注；例句：Please keep an eye on the children while I'm gone.（我外出时请密切关注孩子们。）

7. Keep calm：保持冷静；例句：In a crisis, it's important to keep calm.（在危机中，保持冷静很重要。）

8. Keep to (something)：坚持/遵循（某事）；例句：I always keep to my word.（我总是遵守我的承诺。）

9. Keep out：禁止入内；例句：Keep out! This is a private property.（禁止入内！这是私人财产。）

10. Keep fit：保持健康；例句：I go jogging every morning to keep fit.（我每天早上去慢跑，保持健康。）。