There were over two hundred passebgers on the plane,about one third of which were foreigners.那个which那地方要用who的话怎么改啊？还有一个变复合句的：He heard that his father was ill.He was anxious to go home to see him. He went to the station early in the morning to buy a ticket.which指人，可用who代替的，就在原来那个位置可以告诉我，具体的要求吗，是使用从句还是结构或者连词，因为有很多种变法，嘿嘿，谢了·~就把短句变成并列句、复合句或带有分词短语、介词短语或其他短语的句子He went to the station early in the morning to buy a ticketfor his being anxious to go home to see him onhearing that his father was ill.解释一下，ondoing 一什么就什么，for表原因，应该就可以了