题目内容
14．_______ is important for us to learn English well．（ ）| A． | This | B． | That | C． | It | D． | The |
分析 学好英语对我们很重要．
解答 答案：C．考查形式主语辨析．分析句子结构，可知不定式to learn english well是主语，在句子中后置，而填入词实际上不是真正的主语，只是形式上是主语．如果让后面的动词不定式，那么在句式上容易造成"头重脚轻"，句式不平衡，故往往用it作形式主语，而把真正的主语放在后面．所以选择C．
点评 考察不定式作主语，it做形式主语的基本句式，应注意分析句子结构，合理选择答案．
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