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5．The student’s puzzled look suggested that she failed to________what I said. A．take out B．pick out C．figure out D．find out 解析：选C.考查动词短语辨析.句意：那个学生迷惑的表情表明她没能理解我所说的.A项“拿出”;B项“挑选”;D项“查明”均不符合语境.C项“理解,想出”正确. 6．I________when there came a knock at the door. A．am going to bed B．just about to go to bed C．was about to go to bed D．have gone to bed 解析：选C.be about to do通常与when引导的从句连用.A、D两项时态不符合题意;而B项句子成分不完整. 句型巧析 1(教材P25)Without the breakthroughs of these pioneers in science and technology,whether lucky or planned,the world as we know it today would have been a completely different place. 没有科技上的这些尖端突破,无论是好运带来的还是按计划取得的,我们今天的世界将完全是另一个样子. 【句法分析】 (1)without可用于虚拟语气.当虚拟语气表示与现在事实相反时,从句的谓语动词用“过去式(be的过去式用were)”,主句的谓语动词用“would/could/should＋动词原形”构 成. (2)句中的whether...or意为“不论……还是……”，引导状语.它可以连接并列的成分.有时该短语结构也可以作宾语. ①We human beings could not survive without all the plants and animals around us. 如果我们周围没有植物和动物,人类就不能生存. ②We couldn’t finish so quickly without your help. 没有你的帮助我们不可能完成得如此快. ③Whether true or false,the story is interesting. 不管这个故事是真是假,它很有趣. ④I really don’t care whether he will stay or not. 我真的不在意他要留下来还是要走. | 
