题目内容
19.The research,_______ by the end of this year,will pave the way for future development.( )A. | to be concluded | B. | to conclude | C. | concluded | D. | have concluded |
分析 今年年底将要总结的这项研究为将来的发展铺平了道路.
解答 答案A 由句意可知,这项研究年底总结,属于将来的事情,应该使用表示将来的不定式,research与conclude之间是逻辑上的被动关系,应该使用不定式的被动语态,故答案为A
点评 对于非谓语动词一定牢记不定式表示将来或目的,过去分词表示完成被动,现在分词表示动作与句子动作同时发生.
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