"today" 这个词在英语中主要用作 一般现在时。它通常用来描述当前这一天发生的事件或情况。以下是一些使用"today"的例句：
1. It is sunny today.
2. I have finished my homework today.
3. Share prices moved ahead today.
4. Interest rates came down today.
5. I haven't been able to get much work done today.
然而，"today"也可以与不同的时态连用，具体取决于想要表达的时间意义：
一般将来时：当表示将来要发生的动作时，"today"可以与一般将来时连用。例如：I will go to the store today.
现在完成时：当描述从过去某一时间点持续到现在的动作或状态时，"today"可以与现在完成时连用。例如：I have lived here since today.
需要注意的是，虽然"today"可以与不同的时态连用，但在大多数情况下，它主要用作一般现在时来描述当前这一天的情况。