Question

Though told (tell) to stop,the excited speaker kept on talki

Answer 1

这里是用过去分词表示被动,主句中的主语是speaker,speaker被告知要停止谈话,所以主语与tell动词之间的关系是被动,所以用过去分词.这个句子也可以转化为Though the excited speaker was told to stop,he kept on talking at the meeting.当由though引导的句子变成分词短语时,去掉主语和后面的be动词.总的一个原则就是“现在分词表示主动和进行,过去分词表示被动和完成.”