“换一个”=change another吗

要表示英语的“换一个”，是change another, 还是change it for another？请看下面的考题：

The camera isn’t good enough; I want to change ______.

A. another                                  B. a good one

C. it with another                        D. it for another

【分析】此题容易根据汉语字面意思误选A、B。其实，此题最佳答案为D。英语中的 change sth 表示的是“换某物”，sth 是被换的东西，而 change sth for sth else 表示的才是“用某物换另一物”。比较：

That coat was too large and I had to change it. 那件外套太大了，我得去换一件。

You’d better change that shirt for a large one. 你最好把那件衬衣去换件大号的。

That coat was too large and I had to change it for a smaller one. 那件外套太大了，我得去换一件小一点的。

注意它与change sth into sth（把某物变成或换成某物）不同。如：

We can change ice into water by heating it. 通过加热我们可以把冰变成水。

Mr Smiths changed his dollars into francs. 史密斯先生把美元换成了法郎。

比较以下两句介用 for 和 into 所导致含义的差别(from www.nmet168.com)：

The singer changed his piano for a computer. 这位歌唱家用他的钢琴换了台电脑。

The magician changed the piano into a computer. 这位魔术师把钢琴变成了电脑。