题目内容

4．Most of her spare time ______，she still kept on her research in the library．（　　）
A．occupiedB．having been occupied
C．to be occupiedD．is occupied

分析 绝大部分空余时间都被占用了，她还是继续在图书馆做调查研究．

解答 答案：A
题干句中有逗号分隔，没有连词，说明不是复合句，要用非谓语动词；spare time与occupy之间是被动关系，要用过去分词；过去分词的完成式表达先于谓语的动作，句意表达的是她占用空余时间做研究，是同步的动作．故选A．

点评 过去分词是非谓语动词的一种，用法很灵活，分为简单式done（表示与谓语同时或几乎同时发生的动作）；完成式having been done（表示先于谓语的动作）．学习时，要把握其用法特征：表示被动和完成．同时还要注意区分现在分词和不定式．

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