* Simple: She is qualified for the job because she has the necessary experience.
* Emphasis on the skill: He is highly qualified in web design and has a strong portfolio.
* With a negative connotation: They felt unqualified to make such a large decision without more information.
* Formal: The candidate must be qualified to operate heavy machinery.
* Figurative: After years of training, he felt qualified to finally tackle the mountain.
The best sentence for you will depend on the specific situation you are trying to describe.