问题补充：
高中英语非谓语动词题.The speakman was seatEd in front of all the journalists at the press conference,
答案：
楼主没有弄清楚having done这个非谓语结构的用法特点.
having done在语法上成为现在分词的完成形式,它既表示句子主语和该动词之间为主动关系,又表示该分词所表示动作发生在谓语动词所表示动作之前.
如：Having finished his homework,he went out to play soccer with his friends.
he和finish之间为主动关系,且finish his homework发生在went out之前.
该题中,句子主语the speakman和prepare之间构成如下搭配：the speakman was prepared to answer all kinds of questions.
其中包含固定短语 be prepared to do sth,所以用在非谓语结构中时,直接去掉be动词即可,所以答案是：prepared.
如果对你有所帮助,请点击我回答下面的“选为满意回答”按钮,
