《百年孤独》第一句的时态是将来进行时。这句话可以翻译为：
```
Many years later, as he faced the firing squad, Colonel Aureliano Buendía was to remember that distant afternoon when his father took him to discover the ice
```
这句话中，“was to remember”是将来进行时的用法，表示在未来的某个具体时间，Colonel Aureliano Buendía将会回忆过去的事情