What are the different forms of 'estar' in the present tense in Spanish?
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The present tense forms of 'estar' are: yo estoy, tú estás, él/ella/usted está, nosotros/nosotras estamos, vosotros/vosotras estáis, ellos/ellas/ustedes están.
How is 'estar' conjugated in the past imperfect tense?
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In the past imperfect tense, 'estar' is conjugated as: yo estaba, tú estabas, él/ella/usted estaba, nosotros/nosotras estábamos, vosotros/vosotras estabais, ellos/ellas/ustedes estaban.
When should you use 'estar' instead of 'ser' in Spanish?
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Use 'estar' to describe temporary states, locations, emotions, and ongoing actions, whereas 'ser' is used for permanent characteristics, identity, origin, and time.
What is the past participle form of 'estar' used in perfect tenses?
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The past participle of 'estar' is 'estado', used with the verb 'haber' to form perfect tenses, e.g., 'he estado' (I have been).
How do you form the imperative (command) form of 'estar' for 'tú'?
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The affirmative imperative form of 'estar' for 'tú' is 'está', and the negative command is 'no estés'.
What are the subjunctive forms of 'estar' in the present tense?
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The present subjunctive forms of 'estar' are: yo esté, tú estés, él/ella/usted esté, nosotros/nosotras estemos, vosotros/vosotras estéis, ellos/ellas/ustedes estén.
Can 'estar' be used to indicate location? Provide an example.
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Yes, 'estar' is used to indicate location. For example: 'La biblioteca está en la calle principal' means 'The library is on Main Street.'