Describing a thing:
* "She has a modern apartment with sleek furniture and minimalist decor."
* "The museum features a collection of modern art from the 20th and 21st centuries."
* "He drives a modern car with all the latest safety features."
Describing a concept:
* "Modern technology has revolutionized the way we communicate."
* "She has a very modern outlook on life, embracing change and new experiences."
* "The novel explores modern themes of identity and belonging."
Contrasting with the past:
* "The old building contrasted sharply with the modern high-rises around it."
* "His music is a blend of modern and traditional sounds."
* "Modern farming techniques are much more efficient than traditional methods."
As an adjective:
* "The city has a vibrant modern art scene."
* "She wore a modern dress with a bold print."
* "The company is looking for a modern and innovative approach to marketing."
Remember that the meaning of "modern" can depend on the context. It can refer to something new and current, something from a recent historical period, or something with a contemporary style.