when to use donde and de donde?
when to use dónde and De dónde?
I'm not sure I am following the above answer. Are you asking the meaning of dónde - really it just means: 'where'? And de dónde can be translated as 'from where'. Example - La casa donde nací. The house where I was born. ¿De dónde eres? Where are you from? Does that help?
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Use "de dónde" with the appropriate form of "ser." When you use "ustedes" in the question, you will answer with "nosotros" (you all-we) and vice versa. Another question answer pair is "tú" and "yo." If you ask a question using "tú," you will always have "yo" in the answer and vice versa. "Usted" and "yo" are a third question-answer pair. If you ask a question using "usted," you will always have "yo" in the answer.
Dónde - Where? No sé donde puse el libro. I don't know where I put the book.
De dónde - Where from? De dónde eres tu mama? Where is your Mom from?
A dónde - Where to A dónde vas este noche? Where are you going tonight?
Donde = where
De donde = from where
¿Dónde está el libro? - Where is the book?
¿De dónde eres? - Where are you from?