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Es necesario que la enfermera sea responsable.

Es necesario que la enfermera sea responsable.
It is necessary that the nurse be responsible.
From Lesson 248:Irregular present subjunctive (sea, vaya, sepa)·Spanish (Spain)

Questions & Answers about Es necesario que la enfermera sea responsable.

Why do we use the subjunctive sea here instead of the normal present tense es?
The phrase es necesario que (it is necessary that) is an impersonal expression that states a requirement or a demand. Expressions of necessity, doubt, or emotion always trigger the subjunctive mood in the following verb, which is why we use sea.
How do you conjugate ser in the present subjunctive?
Ser is fully irregular in the present subjunctive, meaning it doesn't follow the usual rule of swapping the verb endings. You simply have to memorize its forms: sea, seas, sea, seamos, seáis, and sean.
Why do we use ser (sea) here rather than estar (esté)?
We use ser because being responsible is considered an inherent character trait or a lasting quality of a person. The verb estar is reserved for temporary states, conditions, or locations.
If the nurse were male, would the word responsable change?
No. A male nurse would be el enfermero, but because the adjective responsable ends in an -e, it is gender-neutral. The sentence would simply become: Es necesario que el enfermero sea responsable.

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