... one ..., another ...
結構︰…three+複數名詞，one…another…and the other…
說明︰此句型意為“一個…一個…而另一個…”。用於限定的三者，只能在“three+複數<名詞>”之後使用。
There are three rooms; one is mine, another is my sister’s and the other is my parents’.
有三間房間：一間是我的，一間是我妹妹的，剩下的一間是我父母的。
He has three brothers; one is a teacher, another (is) a soldier, and the other an artist.
他有三個兄弟：一個是老師，一個是軍人，而另一個是藝術家。
They three get along well with one another; one is married, another is still a bachelor, and the other has a girl friend.
他們三人彼此相處愉快;一個已婚，一個仍是光棍，而另一個則已有了女友。

... one ... another ...
結構︰... one ... another ...
說明︰此句型意為“一個…而另一個…”。若有三者以上，而未加以限定時，則可使用本<句型>。
I don’t like this one; show me another.
我不喜歡這個，給我看另一個。(暗示：這種東西至少有三種以上)
At one time, she is fine, but at another, she is abnormal¹.
有時候，她表現得很好，有時候又失常。
I really don’t know what kind of man he really is; on one occasion, he is normal, and on another, he acts like a lunatic.我真不了解他到底是怎樣的人;一會兒正常，一會兒又像個瘋子。

... one thing, ... another
結構︰... is one thing, and ... is another
說明︰此句型意為“…是一回事，而…又是另一回事”。
To know is one thing; to teach is quite another.
知道是一回事，教又是另一回事。(學者未必是良師。)
It is one thing to make money, and it is another to spend it.
賺錢是一回事，而花錢又是另一回事。
Saying is one thing, and doing is another. 說是一回事，做又是另一回事。

... one ... or another ...
結構︰one+名詞+or another
說明︰此句型意為“某一…”。本<句型>等於“some+<名詞>+or other”。
Most of us have to read a certain amount of material for one reason or another.
我們大多數人必須為某種理由閱讀若干的資料。
He was absent from the meeting for one reason or another.他為某種理由而沒有出席會議。
I am sure he will succeed one day or another. 我確信某一天他會成功的。
For one reason or another, she committed suicide². 不知什麼原因，她自殺了。