题目内容
20.It seems that El Nino some disasters in the world in the past few months ( )A. | has caused | B. | is causing | C. | will cause | D. | caused |
分析 似乎厄尔尼诺现象在过去的几个月里已经在世界上引起了一些灾难.
解答 答案:A
分析句子,It seems that 此句型实质上是"主+系+表"结构.其中it是人称代词,并无实意,指的是某种情况,seems为系动词,that/as if 引导表语从句,意为"似乎…看来好像…;主句为一般现在时,从句也要用现在时的某种相应的时态;结合后面的时间状语in the past few months 结合选项可知从句所表达的意思是厄尔尼诺现象在过去的几个月里已经在世界上引起了一些灾难,强调对于现在造成的影响和结果,所以从句应用现在完成时去表达,其构成为has/have+过去分词;由于从句的主语为单数 El Nino,所以助动词用has,cause的过去分词为caused,故has caused.故选A.
点评 此题考查时态的用法.做此类题一定要结合句子的语境并注意抓住关键的时间状语去判断出正确的时态,然后直接套用结构即可.
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