2015考研英语语法专项练习四

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考研英语语法贯穿始终，虽然没有明确的题目进行考察，但是数量掌握语法是获取高分的必要条件。新东方在线小编奉上语法专项练习，希望考生通过做题来理解和体会语法知识，融会贯通，全面提高。》》2015年考研英语语法基础12讲汇总
    2015考研英语语法专项练习四
    16. By the first decade of the 21st century, international commercial
traffic vastly beyond today’s levels.
    A.will be expected to extend B. will have been expected to extend
    C.is expected to be extended D. is expected to have extended
    17. We advocate the economic, cultural and religious traditions of all
national minorities.
    A. to respect B. to be respected
    C. respecting D. having respected
    18. There are two horses at the ends of a rope with all their might in
opposite directions.
    A. pulling B. pull C. pulled D. to pull
    19. Today the Tennessee Valley is one of the richest areas in the world. But
if things as they were it would now be a desert.
    A. had left B. were left C. had been left D. had been leaving
    20.After twenty years abroad, William came back only how his hometown was
damaged in an earthquake.
    A. to find out B. finding out
    C. to have found outD. to be finding out
    16. D句子讲的是 “人们期待到21世纪前10年时,国际性商业航空交通远远超过当今水平”, 人们现在就期待, 而不是将来期待, 所以A、B是错误的;
另外, 表示到将来某一时刻为止已经完成的动作或出现的状态, 应用将来完成时, 按句意, 是指extend这一动作的完成,
所以应该在不定式上体现出来。根据上述分析, 选D符合句意要求。
    17. C动词advocate后接动名词而不接不定式做宾语。D虽然是动名词, 但用其完成式在语义上讲不通。
    18. Apulling是现在分词在句中做horses的定语, 相当于which pull。
    19. Chad been left表示与过去事实相反的假设 “如果情况还像以前那样”。
    20. A不定式to find out做结果状语,有意想不到的含义。不定式表示结果时, 用其一般式即可。