在定语从语中，什么时候用THAT，什么时候用WHICH？

只能用that的情况：
<1>关系代词在定语从句中作表语，不管是人或物只能用that。
He is not the man that he was when I first saw him.
【他现在不是我第一次见他时那样的。】

<2>当先行词即指物又指人时，多用that引导定语从句。
Look at the girl and the dog that are crossing the street.
【瞧正在过马路的那个女孩和那只狗。】

<3>当先行词是有生命的动物或人时，宜使用that而不是which。
1.What's the name of the animals that jumps about?
【四处蹦跳的动物叫什么名字？】
2.Who is the girl that talked to you yesterday?
【昨天和你说话的女孩儿是谁？】

<4>当先行词被形容词的最高级修饰时引导定语从句的关系代词只能用that，而不能用which。
This is the most interesting book that I've ever read.
【这是我所读过的最有趣的书。】

<5>当先行词被all,something,anything,nothing,everything,little,much,the one,none等时，引导定语从句多用关系代词that。
1.The goverment has promised to do all that lies in its power to alleviate the hardships of people.
【政府承诺尽其一切力量减轻人民的苦难。】
2.When we see anything that happen on the island, we're so glad.
【当我们看到岛上发生的事情，我们都如此兴奋。】
3.Tom told