なさいCommand to do

The imperative or command form (命令形) gives strong, direct commands, e.g. 食べろ ('Eat!'). On its own, it sounds harsh, so it's often softened. なさい is a more polite alternative, often used by parents or teachers toward children, e.g. 野菜を食べなさい ('Eat your vegetables!'). Both forms command action but differ in tone.

ないでください se usa para pedirle a alguien que no haga algo. Es relativamente neutro y podría usarse tanto con desconocidos como con personas del mismo estatus. Por otro lado, なさい es una orden firme, similar a 'Haz (esto)', y suele ser usada por alguien en una posición superior, como profesores dirigiéndose a sus alumnos o adultos a niños.

なさい is a firm but polite command form, often used by those in authority (like teachers or parents) toward subordinates. In contrast, ないで is a casual way to ask someone not to do something, e.g. 行かないで ('Don't go.'). It is typically used among close friends or family.

La forma diccionario (no pasado) de un verbo + な expresa una orden tajante de no hacer algo. En cambio, la raíz del verbo + なさい expresa una orden enérgica pero respetuosa. Por ejemplo, 食べるな significa '¡No te lo comas!', mientras que 食べなさい significa '¡Cómetelo!'. A pesar de derivar de un verbo honorífico, なさい sigue siendo una orden y se utiliza con personas de estatus inferior o niños, no con superiores.

Both are command forms, but with different tones. なさい is a polite but direct command, often used by teachers or parents, e.g. 食べなさい ('Eat.'). てごらん is softer and gently encourages someone to give something a try, e.g. 食べてごらん ('Try eating it'). Both are typically used from adults to children, or superiors to subordinates.

Both forms are used to ask someone to do something, but with different levels of formality. なさい is a polite command often used from superiors to subordinates, as in 待ちなさい ('Wait.'). お～願う is extremely humble and formal, used in business or public announcements, as in お待ち願います ('We request that you to wait.').

なさる and なさい are derived from the same verb but used differently. なさる is an honorific form of する, used for respectful reference to someone's actions, as in 明日仕事なさいますか？ ('Will you be working tomorrow?'). なさい is the imperative form, used to firmly but politely instruct someone, as in 宿題をしなさい ('Do your homework.').

てください y なさい se usan para pedirle a alguien que haga algo. てください es una petición similar a 'Por favor (haz esto)', y es apropiada en situaciones neutras o formales, como con desconocidos o personas del mismo estatus. Por otro lado, なさい es una orden firme, similar a 'Haz (esto)', y suele ser usada por alguien en una posición superior, como profesores dirigiéndose a sus alumnos o adultos a niños.

Both forms ask someone to do something, but the tone is different. なさい is a polite but direct command, often used by parents or teachers, as in これを使いなさい ('Use this.'). お～ください is a respectful request form, used to politely encourage someone like a customer or superior to do something, as in これをお使いください ('Please use this.').