"the"开头并没有固定对应的时态，它主要作为定冠词使用，用于特指某个或某些事物。不过，"the"可以用于强调某些特定的时间或情境，以下是一些例子：
一般现在时
The sun rises in the east.
一般过去时
The cat slept on the mat.
一般将来时
The meeting will be held tomorrow.
现在完成时
I have read that book.
过去完成时
By the time we arrived, the movie had already started.
现在进行时
The dog is barking at the stranger.
过去进行时
They were playing football when I arrived.
将来完成时
By next month, I will have finished the project.
将来进行时
This time next week, I will be lying on the beach.
因此，"the"开头的句子可以适用于多种时态，具体时态取决于句子的语境和所要表达的时间关系。