* Formal: The loud music from the party next door obtruded into our quiet evening.
* Figurative: His personal opinions obtruded upon the discussion, making it difficult to stay focused on the main topic.
* Active Voice: The tall building obtrudes upon the skyline, blocking the view of the mountains.
* Passive Voice: Her sense of humor was obtruded upon the somber occasion, causing a few nervous chuckles.
Note: "Obtrude" often implies an unwelcome or forceful intrusion.