Learn Italian: Stavo per precipitare nell'abisso, ma all'improvviso fluttuavo. - I was about to plunge into the abyss, but suddenly I was floating.

Why is fluttuavo in the imperfetto when it is introduced by all'improvviso (suddenly)? Normally, doesn't "suddenly" trigger the passato prossimo?

You are exactly right that all'improvviso usually marks a sudden action interrupting a state, which normally requires the passato prossimo. However, this sentence relies on the imperfetto onirico (dream imperfect). In the surreal logic of dreams, sudden transitions often just drop you into a new, ongoing state. Using fluttuavo rather than a completed past tense emphasizes the immersive, timeless quality of the dream world.

How does the phrase stavo per precipitare work?

This uses the construction stare per + infinitive, which means "to be about to" do something. Because the dream is being narrated in the past, stare is conjugated in the imperfetto as stavo. It perfectly captures the suspenseful feeling of being on the brink of an action right before the dream shifts.

Could I just say stavo per cadere instead of precipitare?

You could, but precipitare paints a much more vivid picture. While cadere is the general verb for "to fall," precipitare means to plummet, plunge, or fall headlong from a great height. It pairs much better with the dramatic imagery of an abisso (abyss).

Why do we need the article in nell'abisso? Couldn't we just say ?