How could the following sentence be written correctly nobody saw nothing coming?

The sentence "nobody saw nothing coming" is grammatically incorrect because it uses a double negative. Here are a few ways to write it correctly:

* Nobody saw anything coming. (This is the most straightforward and grammatically correct way to say it.)

* They saw nothing coming. (This emphasizes that the event was unexpected)

* No one saw it coming. (This emphasizes the lack of foresight)

It's important to avoid using double negatives in writing because they can make your sentences unclear and confusing.