When arriving at that country, he found that there were few occasions to speak chinese.
问题描述：
When arriving at that country, he found that there were few occasions to speak chinese.
句中arriving为何用进行时,后面found,were为什么用过去时?
答
这是一个省略句,非省略情况下应该是这样的 When he arrived at that country .但当主句和从句的是同一主语时,可以省略从句的主语,但是谓语得变形.主动就变成现在分词,被动就变成过去分词.