"When do I HAVE TO use 'else' ..." other'
outro , ainda mais , diverso
It is an adverb
It means in addition ,besides as in
Or use it in the sense of 'instead ' diverso as in :
Is anyone else capable of solving this equation .
outros , diferente , alternado
It is an adjective
It refers to a person or a thing different or distinct from one already mentioned in the sentence.
Ask him or any other salesman about the price list .
It means also additional or further
One other piece of chocolate please !
Other examples : ( different examples than the aforementioned )
on the OTHER hand
every OTHER day
in OTHER words
As they seem to have similar meanings you can easily decide which to use ,because one is an adverb (else) and the other one an adjective (other ) .
He gave them other exercises.
You can't use 'else ' here ,even if it might convey the same meaning , because the word in an adjective position ,so 'other ' is the right one to use here.
You better tell her something else .
Here the word is in an adverbial position , and 'else ' is the suitable as an adverb in this case ?
Você entendeu ?