關係副詞that在定語從句中是如何使用的呢？同學們學習了哪些知識？
that可用作關係副詞引導定語從句嗎
在引導定語從句時，that通常用作關係代詞，它在定語從句中主要用作主語或賓語。但事實上，that有時也可用作關係副詞，在意義和用法上與關係副詞相同。
如世界知識出版社出版的《薄冰高階英語語法》認為：that有時亦可用作表示時間的關係副詞，相當於when。該書還指出：下面一些說法都對，但①最為正式，⑦最為非正式：
①The day on which she arrived was Thursday.她到的那天是星期四。
②The day which she arrived on was Thursday.
③The day that she arrived on was Thursday.
④The day she arrived on was Thursday.
⑤The day when she arrived was Thursday.
⑥The day that she arrived was Thursday.
⑦The day she arrived was Thursday.
⑧When she arrived was Thursday.
又如外文出版社與商務印書館聯合出版的.柯林斯系列語法著作《英語語法系列——連詞》認為：有時可以用on the day、at the moment或the first time之類的短語加上that-關係從句代替連線when引導的時間狀語從句。該觀點的言外之意就是：on the day、at the moment或the first time後接that從句是關係從句（即我們通常說的定語從句），但on the day that、at the moment that或the first time that在意義上相當於when引導的時間狀語從句。
再如Michael Swan著的《英語用法指南》(Practical English Usage)認為，在the day後面用when或that引導定語從句都有可能。該書給出的例句是：
Tuesday was (the day) when / that Jake went to London to see Colin.星期二就是傑克去倫敦看科林的日子。
很顯然這個例句所包括的可能有：
Tuesday wasthe day thatJake went to London to see Colin.星期二就是傑克去倫敦看科林的日子。
Tuesday wasthe day whenJake went to Londonto see Colin.星期二就是傑克去倫敦看科林的日子。
Tuesday waswhenJake went to London to see Colin.星期二就是傑克去倫敦看科林的日子。（句中的when引導的是一個表語從句）
定語從句關係副詞能不能由that代替
在非正式文體中，表示時間的普通名詞後面的 when 常常由 that 來替代或省略。
Come and see usany time (that)you're in town. 你什麼時候進城，就來看望我們吧。
I'll never forgetthe day (that)we met. 我永遠不會忘記我們見面的那一天。
That wasthe year (that)I first went abroad. 那一年是我第一次出國。
somewhere, anywhere, everywhere, nowhere 和 place 後面的 where 也常常由 that 來代替或省略（但其他詞不行）。
Have you gotsomewhere (that)I can lie down for an hour? 你有沒有什麼地方可以讓我躺下來休息一個小時？
We need a place (that) we can stay for a few days. 我們需要一個可以暫住幾天的地方。
(但不能說：We need a house we can stay for a few days.)
在非正式文體中，way 後面的 in which 可以用 that 替代或省略。
I didn't likethe way (that)she spoke to me. 我不喜歡她對我書店方式。
Do you knowa way (that)you can earn money without working? 你知不知道有什麼辦法可以不工作就賺到錢？
這種方法同樣適用於 reason 後面的 why。
The reason （that）you're so bad-tempered is that you're hungry. 你脾氣不好是因為你餓了。
