El uso de "other" y "another" depende basicamente del numero (plural o singular) del substantivo al que te refieras y de si estás refiriéndote a un substantive indefinido o definido. Si usas un substantivo en singular: Necesito otro cuaderno. En inglés usarás "another" I need another notebook. (Literalmente "necesito un otro cuaderno"). Claramente, no puedes usar "another" con un subtantivo en plural. I need other notebooks = necesito otros cuadernos. Tampoco puedes usar "another" si en español, o inglés, usarías un artículo definido... esto es por una cuestión lógica, ya que "an" es un artículo indefinido, no tendría sentido tener un artículo definido y uno indefinido modificando al mismo substantivo. Necesito el otro cuaderno. I need the other notebook. Ahora, en esas dos estructuras, puedes ver que "other" y "another" están siendo utilizados para modificar un substantivo, no son el substantivo. "Others", es posible, sólo cuando "other" y "others" son el substativo en sí. Compara: Tengo otra idea (el substantivo es "idea", la palabra "otra" está modificando al substantivo) Tengo otra ("otra" es el substantivo). Sólo en este caso, es posible usar "others", cuando "other" y "others" son el substantivo. She sent me the other = Ella me envió el otro (puede referirse a cualquier cosa que haya sido previamente mencionada). She sent me the others = Ella me envió los otros. La razón por la que "others" no es posible cuando "other" no es el substantivo de la oración, es porque cuando "other" modifica a un substantivo, éste funciona como adjectivo, y como sabes, los adjetivos en inglés no pueden tener plural en inglés. The red house = la casa roja. The red houses = las casa rojas. Sólo los substantivos pueden declinar en plura. Nunca los adjectivos. Espero que eso responda tu pregunta.

OTHER-- it is used when you are referring something else. ex-- seller - i have two cups A and B and you should buy cup A. buyer - hmm no, i want the OTHER. in the above situation buyer is referring the other cup that he/she wants and not the one that seller is trying to sell him/her ANOTHER means " an other " or " one more" ANOTHER = AN OTHER = ONE MORE ex.-- seller - i have two cups A and B, you want B buyer - hmm yeah i like B seller - hey wait.. i have ANOTHER cup C = i have one more cup C. in the above situation "ANOTHER" means "one more".

Yes. I'd say that "another" refers to the next item in a series of similar items that we don't know yet. For instance: Let's have another drink (you know we've had two drinks and we will now have a third). They got another dog (we know they had dogs, now they have a new dog to add to that list) They're having another argument (we know they argue a lot, now they're arguing again) Another person might feel differently (a person who isn't you or me might feel differently) In each case the new drink/dog/argument/person isn't known to us, we just know it's a new or different one. "Other" is more specific. For instance: I want the other book (I don't want the book you're pointing to, I want that book over there that is not the one you're pointing too) The other dog barked (The dog that barked is not the dog you are looking at, but the one that we both know is also here). She was the other woman (other woman is a slang term for a mistress, because she is not the wife) Other can also refer to a plural or something more abstract. For instance: Other people have problems too. (People who are not you have problems) I hope that helps!

I believe another refers to an additional thing and other refers to something different. For example you would ask for another piece of cake. Vs. I don`t want that piece of cake, I want the other piece.