“换一个”=change another吗

　　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 isnt 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。

　　Youd 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：

　　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。