您好，是的，for和to经常可以在同一个句子中使用。例如：

- I am studying for my exams to get good grades.

- She is saving money for a trip to Europe.

- He is working hard for a promotion to a higher position.

- They are exercising regularly for better health and fitness, and to lose weight.

在这些例子中，for表示目的或原因，to表示结果或目标。它们一起使用可以更清楚地表达一个人的意图和目的。