大同考博培训班

　　考博英语词汇语法模拟题

1.____in the past, at the moment it is a favorite choice for wedding gown.
　　A. Unpopular has as white been  B. White has been as unpopular
　　C. Unpopular has been as white  D. Unpopular as white has been
　　2.____for a long time, the fields are all dried up.
　　A. There has been no rain  B. Having no rain
　　C. There having been no rain D. There being no rain
　　3. The millions of calculations involved, ____by hand, would have lost all practical value by the time they were finished.
　　A. had they been done  B. they had been done
　　C. having been done  D. they were done

1. D) 【句意】虽然白色过去不受欢迎，但目前它是婚纱的首选颜色。
　　【难点】as是连词，引导让步状语从句时，往往使用半倒装形式。又如：Beautiful as she is, she is foolish.
　　2. C) 【句意】由于长时间无雨，田野变得十分干燥。
　　【难点】该句的前半部分是There be结构，完成式独立结构形式，这与时间状语for a long time相吻合。
　　3. A) 【句意】数百万次计算如果用手工操作，那么，到计算结束的时候，就将失去其全部实际意义。
　　【难点】这是一句虚拟语气的句子，条件句使用了省略if的倒装句形式，动作与过去事实相反。