other,作形容词时,表示其他的,后面接名词,相当于others,如:She is just like other girls.;也可作代词使用,如:Three apples are red, one other is green.
another,作形容此时,表示另一,另外的,后面接名词,如: I need another two days to finish the work.;也可作代词使用,如:He has had two cups of coffee, but he wanted another.
others, 代词,其他的人或事,后不接名词。如: Some students are playing basketball, others are playing football. some...others...为固定搭配
another two days=two other days