三種句子：

　　四種成分：

　　這三種句子不是直接放在另個句子中作成分，而是要做以下調整：

　　1) 用陳述句作成分時，要在句首加

　　2) 用一般問句作成分時，先將疑問句換成 語序，然后在句首加

　　3) 用特殊問句作成分時，只需將疑問句換成 語序。

　　下面是95年1月份的閱讀真題，來感受下幾個難句吧，若搞定名詞從句，那它們也就是小兒科。

　　It is a curious paradox that we think of the physical sciences as “hard”， the social sciences as “soft，” and the biological sciences as somewhere in between. This is interpreted to mean that our knowledge of physical system is more certain than our knowledge of biological systems， and these in turn are more certain than our knowledge of social systems. In terms of our capacity of sample the relevant universes， however， and the probability that our images of these universes are at least approximately correct， one suspects that a reverse order is more reasonable.