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高效语法复习篇 第9节 名词性从句 一、形容词后的that从句 that引导的名词性从句还可以用在一些形容词后面。这种句型一般都用人作主语，所用的形容词都是表示思想状况或感情色彩的形容词，如certain, sure, positive, afraid, convinced, anxious, disappointed, worried, glad, happy, sorry, amazed, surprised, aware, doubtful, confident等。 I am sure/certain that he's at home now. 我肯定他现在在家。 I am a bit worried that she will not be able to make it. 我有点担心她做不成这件事情。 二、what 从句的小结 1．意思是“所……的事/物”， 相当于the thing(s) that…或 that (those) which…可以用于以下情况： (1)引导主语从句。 What is gone is gone. 过去的事就过去了。 (2)引导表语从句。 He's not what he was a few years ago. 他不是几年前的他了。 (3)引导宾语从句，包括介词宾语。 As a friend of yours, I want to tell you what I hear. 作为你的朋友，我想告诉你我所听到的。 I don't care about money or what people call position. 我不在乎金钱或者人们所谓的地位。 2．用作插入语，指代后面的成分。这和非限制性定语从句正好相反，非限制性定语从句指代的是前面的成分。 It is a useful book, and, what is more, not an expensive one. 这是本很有用的书，再说也不贵。 三、常考的名词性that从句 用it作形式主语的that从句有以下4种不同的搭配关系： 1．It ＋ be ＋形容词＋ that从句 It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明显…… It is necessary that we (should) study hard. | 
