这几个词都有“其它”的意思,但是 other是不单独使用的,anothers这种形式我没见过,the other 是指两者之间的另一个,another是指三者间的另一个,而others是指多者中除去一个,剩下的可以用,如：threr are two apples,you can eat one and the other is for Tom.
there are three pencils,the green one is tom's,the red one is jack's and another is mine.
others 是指一群中除去一个后的,如：you can have one apple from the basket and others we should take to your grandma.