The sentence "Marcos es tan guapo que tú" is grammatically incorrect as it lacks a proper comparison. It should be phrased as "Marcos es tan guapo como tú" for correctness. This illustrates the importance of complete comparative phrases in Spanish grammar. ;
The original sentence is grammatically incorrect as it fails to use the correct comparative structure. It should be written as "Marcos es tan guapo como tú". This changes the sentence to reflect an accurate comparison between Marcos and the other individual.
;