题目内容
1._____what to do,he asked teacher for advice.( )A. | Knowing | B. | Known | C. | Knowing not | D. | Not knowing |
分析 不知道做什么,他向老师寻求建议.
解答 答案D 由题干可知,此处考查非谓语动词,know的逻辑主语是句子主语he,二者之间是主动关系,排除过去分词known,应该使用现在分词,根据句意可知,是不知道,应该用否定式,需要在knowing的前面加not,故答案为D
点评 对于非谓语动词的考查,应该学会先判断语态,根据主被动关系可以排除部分干扰项;再根据时态排除部分干扰项,对于非谓语动词否定式的表达归纳如下:(1)不定式 to前面加not (2)过去分词前面加not (3)doing和havingdone的前面加not.
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