题目内容
3.Mr.Smiths was busy writing a story,only ______ once in a while to smoke a cigarette.( )| A. | to stop | B. | to have stopped | C. | being stopped | D. | stopping |
分析 史密斯先生忙于创作故事,只偶尔停下来吸支烟.
解答 答案:D
根据stop与其逻辑主语(主句的主语)Mr.Smiths之间构成主动关系和现在分词doing表一主动的动作,这两点可知,stop需用现在分词stopping的形式表伴随状语.故选D.
点评 此题中A选项是一混淆项.需注意only/never to do常用来表示一个意料之外的结果状语从句.
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