有朋友在本站留言提问（问题见www.yygrammar.com/guestbook/Guest_Reply.asp?TopicID=1352）：

―Mom, what did your doctor say?

―He advised me to live _______ the air is fresher. (2006年四川卷)

A. in where             B. in which              C. the place where         D. where

这道题应该选哪一项？我个人认为 A 和 D 项都正确，选 A 项的话 where 引导名词性从句（作介词宾语）；选B项那 where 就是引导状语从句，A 和 B 的意思都一样。

这是一个很有趣的问题，这位网友的分析有一定的道理，此题选D无疑是“最正确的”，但选A就“不正确”吗？是否可以认为 where 引导的从句是用作介词 in 的宾语呢？或者认为在 where 之前省略了 a place（即 He advised me to live in a place where the air is fresher.）。

由于这是一道高考题，出自专家之手，所以我们首先不要轻易地说这道题出得不妥或不严谨。于是我们查了手头的一些辞书以及自己平时收集的资料，但遗憾的是，介词 in 后面接where引导的宾语从句的例句子还不真好找，找了半天，只找到下面一个例子：

He has a habit of poking his nose in where it doesn’t belong. 他有个爱打听闲事的习惯。（摘自《当代美国英语学习词典》nose 词条）

不过在“英国国家语料库”（BNC）上倒是查到了一些相关的例子，由于“英语语法网”的编辑老师说，只有正式出版的英美原版词典和语法书上的例句才能“以此为据”，BNC上的例句只能供参考，所以其说服力还不是太强，在此笔者请各位朋友提供有关辞书上的例句，对此问题作进一步的探讨。

附：在“英国国家语料库”（BNC）上输入 in where 查到的一些相关的例子：

△“Fit me in where you need,” said Sara.

△Not her national monument I told her, and she shouldn't come poking her nose in where it wasn't wanted.

△The weaving yarn is only caught in where the card changes from blanks to punched holes or vice versa.

△The equipment was usually quite well protected, but the wind was driving rain in where it usually did not reach.

△He didn't bother too much where the flag was, he was just interested in where he was going to land the ball.

△I am not that interested in where the jobs that make the product are located, but I have sympathy with tobacco workers.

△There are, moreover, serious complications in the view taken by the later tradition, complications which clearly arise from an attempt to fit Abdulkerim in where he does not belong.

△Third, there is a distinct difference in where and how this recession has struck: while the 1980