【问】 We left the day that he arrived.请问句中的that是什么词?

【答】 上面的that可以看作是关系副词(R. Quirk等把它称作“作状语的关系代词”)。这种用法的that用来引导定语从句并在定语从句中充当状语。它所修饰的名词常常是day，year，time，moment，speed，way，reason，place，direction，distance等等：

1. I stay at home on the days that I am not busy. (ELD)

我工作不忙的日子就呆在家里。

2. He went home the same evening that he heard the news. (Dreiser)

他听到这消息的那个晚上就回家了。

3. During the years that he had been in the army，he got acquainted with her.

他是在部队的那几年里认识她的。

4. I can’t think of many places in the world that I would like to live.

我不认为世界上会有许多地方是我愿意居住的。

5. He doesn’t see things the way that we see them.(《新英汉辞典》)

他看问题跟我们不同。

6. He spoke in such a way that they were offended.

他说话的方式使他们很生气。

7. The reason that they didn’t go to see the house is that they prefer to live in an apartment. (CGEL)

他们没有去看那所房子的原因是他们愿意住公寓房。

8. The direction that a force is acting can be changed.

力的作用方向是可以改变的。