Te Why usted
here is the sentence. Mira a tu hermano te va a tomar una foto. Question, why is it te va and not just va
2 Answers
If you don´t include the personal pronoun te here, we don´t know who is affected by the action (of whom the photo is being taken).
You could say Mira a tu hermano, va a tomar una foto. But then the guy will ask ¿Una foto de qué / quién?
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