Question

____ is well known to the Irish is ____ St. Patrick was taken to Ireland as a prisoner when he was 16.

A．It, that

B．As, what

C．That, what

D．What, that

Answer 1

D

试题分析：原句意思是，爱尔兰人都知道，帕特里克在他十六岁时，作为囚犯，被带到了爱尔兰。这是个主从复合句，包含一个主语从句和一个表语从句。主语从句中缺主语，故用what引导；后面的表语从句中不缺成分，故用that引导，所以选D。
点评：名词性从句是高中语法的重点内容，分析句子结构，判断从句，然后依据相应的规则做题。