题目内容
16.More than 2million foreign tourists are expected to visit the US by 20l5,_________a lot to the US economy.( )| A. | to contribute | B. | contributing | ||
| C. | contributed | D. | to be contributing |
分析 到2015年,预计会有200多万名外国游客访问美国,为美国经济作出了很大的贡献.
解答 答案:B
分析句子结构可知,"_________a lot to the US economy"在句中作结果状语,主语"More than 2million foreign tourists"与动词contribute是主动关系,所以此处要用动词的现在分词形式;A.to contribute 动词不定式,作结果状语时,表示事先没有预料到的事情;此处则表示由前面的现象引发的必然结果;C.contributed过去分词,与主语构成被动关系;D.to be contributing是动词不定式的进行时,表示在句中谓语动词的动作发生的同时,不定式所表示的动作或状态也正在进行或持续着;此处表示的是由该现象,而引发的必然结果;并不表示两个动作在同时进行;所以A.C.D.都不正确;故选B.
点评 本题考查了现在分词作结果状语的用法.做本题时,首先应根据句意或句子的结构,弄清空缺的部分在句中所作的成分;然后判断主语与该动词是否构成主动关系;另外,还需要注意总结现在分词,动词不定式以及动词不定式的进行时的用法及区别.
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