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时间:2018-10-22 英语知识 我要投稿
  当不知道或没有必要指出动作的执行者时,常用被动语态,这时往往不用by短语。  The front window in the classroom was broken yesterday. 昨天,教室的前窗被打破了。(不知谁打破的)  They have been poorly paid. 他们的工资太低。(没必要指出工资是谁付的)  突出或强调动作的承受者,如果需要说出动作的执行者,用by短语。  The time-table has been changed. 时间表已变动了。(要突出的是“时间”)  These books are written especially for children. 这些书是专门为孩子们写的。(强调的是“”这些书)  为了使语言得体或圆滑等不愿意说出动作的执行者。如:  You are requested to make a speech at next meeting. 请您在下次会议上作个发言。  It is said that she is going to be married to a foreigner. 据说她要嫁给一个外国人。  出于修辞的原因,或是说为了更好地安排句子。如:  It is generally considered impolite to ask one’s age, salary, marriage, etc. . 问别人的年龄、工资、婚姻状况等通常被认为是不礼貌的。  The notion is especially opposed to by those who have invested much in the area. 这个提议特别遭到了那些在本地区投资很大的人的反对。(因those的定语太长了,若用它作主语,主语与谓语就相距太远而显得句子松散。)
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