【问】 我遇到这样一道选择填空题：

“Was the test difficult?”

“Not at all，we found____”

A. it very easy for doing. B.very easy to do it.

C. it very easy to do. D. it very easy to do it.

命题者认为C(it very easy to do)是正确的。但我认为D也是对的。

【答】 从语法结构上看，选C或选D都是正确的。选C时，it是人称代词，代前面的the test，充当found的宾语。而very easy是宾语补足语，to do是形容词的补足语(例如，He is hard toconvince.Jack is easy to fool.The bread was hard to bake.)。选D时，第一个it是外置的形式宾语(或称先行宾语)，其实际宾语为to do it。这最后的it是代the test的。实际上，D和下列句子是属于同一句型的：

1. Haywood found it difficult to explain his beliefs to Philip. (Maugham)

海伍德感到难于向菲利普解释他的信念。

2. Sometimes he found it very hard to like Fellowes. (Greene)

有时他觉得很难喜欢费洛斯。

3. She soon found it possible to do this regularly. (Dreiser)

很快她发现有可能经常干这事。