SAT语法题求解Many of the ships used by oceangraphic institutions

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 10:56:32

SAT语法题求解
Many of the ships used by oceangraphic institutions are small (vessels that have outlived the purpose which they have been built for originally.)
括号是错的,为什么要改成vessels that have outlived their original purpose?我认为此处THEIRS指代不明啊.THX!

在SAT中,还有一条非常重要的原则：简洁性原则,即用最简洁（最短）的方法表达意思.能用单词的不用词组,能用词组的不用从句.
原句括号中the purpose which they have been built for originality就是用which引导的定语从句修饰purpose,但这个定语从句表达的意思即为“原来的,原先的”,那就简单的用original这个形容词来修饰purpose就可以了.
另外,that引导的英语从句紧跟在vessels后面（即修饰vessels）,所以从句中their只能指代vessels,不存在指代不明.
再问：简洁性我理解，我认为这个指代不明是因为句子中出现了很多名词复数，而且不能用逻辑辨别指代的是谁。（比如真题貌似有过一道，前面提了很多单数名词，后面有一个 its treatment，因为逻辑上能判断这个its指的是前面提到的一种病所以没有歧义，指代明确）我认为这里的their也可以指oceangraphic institutions的最初目的啊。。。
再答：代词指代往往是指代靠的最近的名词，而本句中vessels是最近的名词。另外，oceangraphic institutions意思是海洋测绘研究所，在句中不能说是研究所的目的，逻辑上不通。况且，你看看其他选项，都是明显错误的，就算你认为句中有很多复数名词，their指代不明，但是其他选项也是不能选的。

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