Ⅰ. another 指不定数目中的“另一个、又一个” (三个以上)用来代替或修饰可数名词。如：
I don’t think the coat is good enough. Can you show me another?
Ⅱ. other 泛指“另外的”修饰复数名词。如：
We study Chinese, maths, English and other subjects.
Ⅲ. others 泛指“另外的人或物”， 但不指其余的人或物的全部。如：
Some like swimming, others like boating.
Ⅳ. the other 指两个中的“另一个”如：
He has two sons, one is in Shanghai, the other is in Beijing.
Ⅴ. the others 特指某一范围内的“其余全部的人或物”如：
There are thirty books on the bookshelf. Five are mine, the others are my father’s.