将来完成进行时的简单句子示例：

1. By next year, I will have been studying English for five years.

2. By the end of this year, he will have been acting for thirty years.

3. By 10 pm tonight, I will have been studying for 3 hours straight.

4. In two years, she will have been working for this company for a year.

5. By the time the sun rises, I shall have been sleeping for 8 hours.

这些例句展示了将来完成进行时在不同时间背景下的应用，强调了动作在将来某个时间点之前已经开始，并且在这个时间点之后仍将继续发生的特点。