in life还是on life？

in life在某人的生活/生命里

on life 中的on 与前面的动词构成固定短语的具体哪个词看情况

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.