Question

_______ was known to them that the boss had broken his promise______ he would give them a rise....

_______ was known to them that the boss had broken his promise______ he would give them a rise. A．What; what B．It; which C．It; that D．As; that

Answer 1

C

试题分析：这里that引导的主语从句是句子的真正主语，所以需要It作形式主语；在主语从句中，又包含一个同位语从句，引导词在同位语从句中不作任何成分，且无实际意义，故用that引导。 点评：在英语中,it有许多不同的用法,它既可以用作代词(如人称代词、非人称代词)，也可以用作引导词（作形式主语或形式宾语），还可以用来构成强调句型。it作非人称代词表示天气、日期、时间、温度、距离、价值、路程、度量、自然现象与环境等。也可模糊地指一般情形或上文的部分或整个意思；这道题目的关键在于判断从句是定语从句还是同位语从句。引导词that引导定语从句时，在从句中作主语或宾语，作宾语时常常省略；that在同位语从句中仅起连接作用，不充当任何成分，并且不能省略。