"Du" is nominative while "Dir" is dative. Depending on the sentence, also the genitive "Dein" or accusative "Dich" may be required. All your examples are abbreviated, so it may not be obvious immediately: Schönen Abend noch! Ich wünsche dir noch einen schönen Abend. Mach's gut! Mache Du es gut. The following examples of "Dein" and "Dich" are grammatically correct, but would not be used normally. Möge Dein Glas immer voll sein. Möge Dich das Glück begleiten. |