英语中 定语从句 介词 which
例题：
There was not a small house in the village (to which )
he had not brought food and comfort.
()中的to在这里的作用,
如这句话只用which该如何讲,
我自己做这种类型的题,总是不容易判断出到底该不该用到介词,
需用到介词,是用哪一个（像什么of/in/on/to which等等,以及介词 关系代词/关系副词）