To compliment someone in English, you can say things like "You're looking great today!" or "I really admire your work." Some other ways to compliment someone include "You're so talented," "I'm impressed by your skills," and "You have such a great sense of humor." If you want to be more specific, you could say something like "I love the way you always have such a positive attitude" or "You have a beautiful smile." Ultimately, the best way to compliment someone is to be genuine and sincere.