题目内容
11.E-shopping,when properly _______,can save us much time and trouble.( )A. | doing | B. | does | C. | done | D. | to be done |
分析 句意:网上购物若操作得当能节省我们很多精力和时间.
解答 答案C.分析句子成分可知,主句为"E-shopping can save us much time and trouble","when properly _______,"为状语.主句主语"E-shopping"与所给动词"do"构成逻辑上的被动关系,因此用过去分词,从而排除A、B和D项.句中"when properly _______,"为省略结构,完整结构为:"when e-shopping is done properly",因此C项符合语境,故选C.
点评 本题考查现在分词作状语.做这类题目首先根据句意判断是谓语还是非谓语,如果是分词做状语的时候,看动词与逻辑主语构成主动关系,就使用现在分词的形式;如果二者构成被动关系就使用过去分词的形式.不定式表示动作未发生作目的状语.
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