名词性从句

经典例题：
1. _____ is that I can’t understand what she is talking about.
A. What I find difficult            B. What I find it difficult
C. How difficult I find            D. How difficult I find it
解析：我认为困难的是我弄不明白她在说什么。判断此句为主语从句，属于名词性从句。名词性从
句根据意思选择关系代词，由于从句中缺少宾语，所以选择 A。B 项成分完整，填写 what 不恰当。

2. Her remarks left me wondering _____ she could have changed so suddenly.
A. when B. how       C. whether     D. that 解析：她的话让我想知道她如何变化得这么突然。
根据句意选择 B。

宾语从句：
1. It is said in Australia there is more lan ...