题目内容
19.Researchers have been able to translate brain signals into speech using sensors ____ to the surface of the brain for the first time.( )A. | attached | B. | to be attached | ||
C. | attaching | D. | having been attached |
分析 研究者通过把传感器粘贴在大脑表面,首次将大脑信号转换成语言.
解答 答案:A 题干中sensors与attach之间构成动宾关系,要用被动;句意表达的是完成的动作,要用过去分词.故选A.
点评 过去分词是非谓语动词的一种,用法很灵活,分为简单式done(表示与谓语同时或几乎同时发生的动作);完成式having been done(表示先于谓语的动作).学习时,要把握其用法特征:表示被动和完成.同时还要注意区分现在分词和不定式.
练习册系列答案
相关题目
7.White papers have played a more important role in introducing China to the world,with more white papers ______ by the government in 2011than any other year.( )
A. | published | B. | to publish | C. | publishing | D. | being published |
14.The woman,who is said to have moved to America,_____ in China for almost twenty years.( )
A. | lived | B. | has lived | C. | was living | D. | had lived |
11.Asking for help suggests you have the courage to admit that you don't know_________ and
want to know it.( )
want to know it.( )
A. | something | B. | anything | C. | everything | D. | nothing |