1.不定代詞other相當于名詞或形容詞,可以在句中作主語、賓語、定語等。相當于名詞時,有復數形式others。

作主語：He has two toys. One is for me, the other is for himself.

作賓語：I have two pictures. You have seen one. Now I will show you the other.

作定語：There are other ways of helping him out of difficulty.

2. 不定代詞another是由an和other構成，由此可以判定它只能代替或修飾可數的單數名詞，前面不再用冠詞。可以在句中作主語、賓語、表語和定語。

作主語：One (girl) wanted to read, and another wanted to watch TV. 

作賓語：Please give me another.

作表語：She is a fool, and her sister is another.

作定語：Would you like another cup of coffee?

3. 對比other與another

(1)the other 用于兩者中的另一個，another 指三者以上中的另一個：

He has two toys. One is for me, the other is for himself.

All these are not good. Show me another, please.

(2)another 還有 “再……” 的意思，other 有 “另外” 的含義：

Have another cup of coffee, please.再喝一杯咖啡吧！

The girl is much cleverer than other three. 這女孩比另外三個都聰明。

(3)修飾數詞的結構不同：數詞+other+復數名詞= another+數詞+復數名詞：

這周我多看了兩本書。

I read two more books this week. =I read two more books this week.

(4)one another 與 each other：兩者均表示“彼此”、“互相”。 

一般認為，each other 用于兩者間，one another 用于三者或以上，但在現代英語中，兩者常可換用。

We should always help each other.

They don’t agree with one another.

另外，童鞋們還要注意，注意：other表泛指，the other 表特指，與其復數others和the others 同理。