题目内容
12.--This yard is so clean today and everything looks fine.--I didn't notice that.It's clear someone it.( )
| A. | cleans | B. | cleaned | C. | has cleaned |
分析 -今天这个院子如此干净一切看上去都很好.
-我没有注意到.很明显有人打扫过.
解答 答案:C 联系前后语境,根据This yard is so clean today and everything looks fine是指现在的院子很干净,所以可以推断是有人已经清理过了,强调过去打扫院子这个动作对现在造成的影响或结果就是院子现在非常干净,这种含义符合现在完成时的用法,强调对现在的影响或结果.现在完成时的构成为has/have+动词的过去分词.由于所在句子的主语为someone,是单数概念,助动词应用has,表达为has cleaned.故选C.
点评 本题考查现在完成时的用法.做题时一定要联系语境准确理解好句意,看是否是侧重于对现在造成的影响,如果是,那就要用现在完成时.并注意现在完成时的构成.
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