题目内容
18.A new learning center has been built in the school,______ students to get to know the world more easily.( )| A. | allow | B. | allowed | C. | to allow | D. | allowing |
分析 在这所学校已经建立起一个新的学习中心,可让学生更容易地了解世界.
解答 答案D.
allow是谓语动词,allowed是过去分词(表被动和完成),to allow表主动和将来,但是题干的主语"a learning center"是allow这个动作的执行者,且动作与主句谓语动词同步进行,应用现在分词表主动和进行,故答案选D.
点评 本题考查非谓语动词中的现在分词用法.现在分词(PresentParticiple)(又称-ing形式),是分词的一种,是非谓语动词,即在句子里面不能单独充当谓语,但能充当其它的一些成分(定语,表语,补语和状语).一般式:doing;一般被动式:being done;完成式:having done;完成被动式:having been done.所有否定式都是在-ing前面加not.
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