被动语态点滴

摘要

＜正＞一、被动语态的使用场合1.当不知道或不必要指出动作的执行者时。①Such books are writen for children.②We haven’t been told about it.2.当说话的中心是动作的承受者时。①The school is run by thetrade union.②The machine was invented by a worker.3.为了表示礼貌或使措词圆通时。