that是英语中十分常见的单词，用法灵活多样，是英语中最常用的词汇之一。作者提醒考生，正因为它是我们认为自己最熟悉的单词，反而容易忽视它。在考研英语中，对that的考查包括三个方面：（1）that作指示代词的用法；（2）that作连词引导各类从句时，需要准确辨别从句类型。

　　一、that 作限定词或代词

　　that可以作限定词或代词连接名词或名词短语，也可单独使用，用以指代人或者物。此外，that不仅可以指代单独的人或物，还可以指代一句话。

　　例：Furthermore, in the early days of long line fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around now. [2006, text3]

　　分析：

　　A.分析句子结构。Furthermore, in the early days of long line fishing, a lot of fish were lost to sharks //after they had been hooked. That is no longer a problem, //because there are fewer sharks around now.

　　第一个句子的主句为a lot of fish were lost to sharks，介词短语in the early days of long line fishing作状语，after引导时间状语从句。第二个句子主句是That is no longer a problem, that为代词，because引导原因状语从句。

　　B.分析that指代。that指代第一句话，"a lot of fish were lost to sharks after they had been hooked"，其中after引导时间状语从句。

　　C.译文：而且，在使用多钩长线捕鱼的初期，许多鱼被钩住后又被鲨鱼夺走。这不再是一个问题，因为附近的鲨鱼更少了。

　　二、that作副词表示程度，相当于so

　　例：It isn't all that cold. 天没有那么冷。