题目： 1. When he arrived, he found________________________( 只有老年人和生病的人) at home. 2. All flights____ (因暴风雪而取消), we decided to take the train. 3. The writer_____________ (如此专心致志地写作) that he forgot to tap the ashes from his cigar. 1．【答案】none but the aged and the sick/only the aged and the sick 【解析】本题考查none but结构及形容词名词化用法的掌握。none but…意为“仅仅，只”。“定冠词the 形容词”可以表示一类人。类似的用法还有：the wealthy(富人)，the poor(穷人)，the handicapped(残疾人)等。 2．【答案】having been canceled because of the snowstorm 解析:本题考查对独立主格结构的掌握。前后分句主语不同且没有连接词，所以考虑用独立主格做状语表示原因。独立结构的构成方式为：名词/代词(与句子的主语不同) 分词/形容词/副词/不定式/介词(短语)。flights与cancel之间是被动关系，且cancel这一动作发生在主句谓语decided的动作之前，所以谓语部分应用分词的被动完成式. 3．【答案】was so absorbed in his writing 解析:本题考查对短语be absorbed in sth．/doing sth．的掌握，该短语意为“全神贯注于…，专心于…”。so强调程度深，与that构成so…that…句型，表示“如此…以至于…”o