نَحْوُ: «مَا أَحَدٌ خَيْرٌ مِنْكَ».
Translation: No one is better than you.
مَا: non-governing negative particle in this analysis.
أَحَدٌ: nominative indefinite mubtadaʾ; negation licenses a meaningful indefinite opening.
خَيْرٌ: nominative khabar.
مِنْكَ: prepositional phrase attached to «خَيْرٌ».
Negation allows a general statement extending over unspecified persons.