例题分析:15.It is politely requested by the hotel management that radios ______ after 11 o'clock at night.
A. were not played B. not be played
C. not to play D. did not play
全句意思是:“旅馆管理部门恳请客人晚上11点后不要打开收音机”。句中的谓语动词request(请求)所引出的从句应当用虚拟语气,即动词原形或“should+动词原形”。本句的主语从句中,主语radio是谓语动词play 的客体,谓语应当用被动语态。所以,答案是C) not be played。在上述这类句子中不能用动词过去时形式表示虚拟语气,所以A)不正确。选项B) not to play是动词带to的不定式,不能在句中作谓语。选项D)did not play也是动词play的过去时形式,同样不能在本句中作为虚拟语气来使用。而且,它是主动语态形式,而本题要用被动语态。
练习:
16). The chairman requested that .
[A]the members studied more carefully the problem
[B]the problem was more carefulnessly studied
[C]with more carefulness the problem could be studied
[D]the members study the problem more carefully
17). The committee recommends that the matter at the next meeting .
[A]would be discussed
[B]will be discussed
[C]be discussed
[D]may be discussed
18). The doctor insisted that his patient .
[A]that he not work too hard for three months
[B]take it easy for three months
[C]taking it easy inside of three months
[D]to take some vacations for three months
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