Mothers often pamper their children.

Industrialization often goes hand in hand with pollution.

Sometimes the most inspired ideas seem to just come from out of the blue.

Saying "I'm not a racist, but..." in an introductory manner can sometimes be passed off as racist.

Generally, the sense whether or not an expression is natural can't really be relied on. For example, even if it feels unnatural, it is often easily due to lack of experience.

The best way to solve a problem is sometimes the simplest.

The rich are often misers.