wqad: Learn how to say 'Hello' in Korean, Italian, Arabic, and almost 50 other languages Learn how to say 'Hello' in Korean, Italian, Arabic, and almost 50 other languages There's a formula: another = an + other. Think of it as of an article plus the word "other" that have historically merged into one word. Grammar requires some article before "other book"; either "the" or "a." Depending on the context, you get either "You need to buy the other book" (if, for instance, the guy bought only the first book out of the set of two) or "You need to buy an_other book ...

Understanding the Context

3 The formal discourse marker used by the OP; "on the one hand ... on the other hand" expresses two contrasting ideas, opinions or facts. In view of this fact, I suggest the following alternatives: Although I like product A, product B also appeals to me strongly. I like product A, although product B is also appealing.

Key Insights

Alternatives to the "on the one hand... on the other hand" construct So 'on the one hand' and 'on the other hand' should be used to mention about 2 opposite ideas in terms of an issue.But if you use 'on the one side' and 'on another side' to mention about something, it means that the problem maybe has more than 2 opinions; and it doesn't need to be contrasting. A good example for this is a cube with 6 sides. The string an other is vanishingly rare in English. In contrast another is positively pervasive.

Final Thoughts

I think it would be fair to say that the second has eclipsed the first to the point of making the first unacceptable, even though it is a grammatical string. Both an and another are members of the category of determiners, while other, on the other hand, is an adjective. There's no grammatical ... I have seen a statement: We have a Christian duty to serve each other. Is this statement correct? Because 'each other' is used for two persons and 'one another' for more than two persons.