that 作关系副词的用法 (摘自《牛津英语用法指南》第四版237.7小节)
在非正式文体中,表示时间的常见名词后面的 when 常常由 that 来替代或省略。
Come and see us any time (that) you're in town.
你什么时间进城,就来看望我们吧。
I'll never forget the day (that) we met.
我永远不会忘记我们见面的那一天。
That was the year (that) I first went abroad.
那一年是我第一次出国。
somewhere, anywhere, everywhere, nowhere 和 place 后面的 where 也常常由 that 来替代或省略(但其他词后面则不行)。
Have you got somewhere (that) I can lie down for an hour ?
你有没有什么地方可以让我躺下来休息一个小时?
We need a place (that) we can stay for a few days.
我们需要一个可以暂时待几天的地方。
(但不能说: We need a house we can stay for a few days.)
在非正式文体中,way 后面的 in which 也可用 that 替代或省略。
I don't like the way (that) she spoke to me.
我不喜欢她对我说话的方式。
Do you know a way (that) you can earn money without working ?
你知不知道有什么办法可以不工作就赚到钱?
reason 后面的 why 也可以这样。
The reason (that) you're so bad-tempered is that you're hungry.
你脾气这么不好是因为你饿了。