定语从句中，先行词为事物的，用that还是which？

　　定语从句中，先行词为事物，用that不用which的情况有：
　　1. 先行词是指物的all, little, few, much, any, anything, something，everything, nothing, none, the one时。例如：
　　All that I can do has been done. 我能做的都已经做了。
　　He won't tell you anything that he has heard about it. 他不会告诉你他所听到的有关它的任何情况。
　　2. 先行词前有all, little, few, much, any, every, no等修饰时。例如：
　　There is little work that is fit for you. 没什么工作适合你做。
　　I have eaten all the food that is left. 我把剩下的所有食物都吃了。
　　3. 先行词时what或which时，为了避免重复，多用that引导。例如：
　　Which is the house that caught fire yesterday? 昨天失火的是那座房子？
　　4. 先行词是there be 句型中的主语，且指物时。例如：
　　There are some apples on the table that are nice and sweet.桌子上有些非常甜的苹果。
　　5. 先行词作主句的表语时。例如：
　　It's a book that will help you a lot. 这是一本对你有很大帮助的书。
　　It's a sunny day that we are longing for. 这是我们所渴望的晴天。

这得看是具体什么物。如果是anything,everything，nothing等这样的，那只能用that,其他的物两者都可(特殊情况除外)。