Simple Sentences:
* She listened intently to the speaker's words.
* He stared intently at the painting, trying to decipher its meaning.
* The dog watched intently as its owner prepared its food.
More Complex Sentences:
* The detective, eyes narrowed intently, examined the crime scene for clues.
* Despite the noise of the crowd, she read the book intently, completely engrossed in the story.
* With a determined look, he began to work intently on the project, hoping to finish before the deadline.
Figurative Language:
* The young artist's eyes, burning with an intense fire, stared intently at the canvas, ready to capture her vision.
* The silence in the room was so thick you could almost hear the sound of everyone listening intently to the news.
Remember to consider the context and meaning you want to convey when choosing your sentence structure and word choice.