Each of them prefers selling the old house to buying a new one.
prefer A to B
在本句型中,A与B是平行结构,可以是名词,也可以都是动名词.例如：
I prefer dogs to cats.在狗与猫之间我更喜欢狗.
Most people prefer trains to buses.大多数人愿意坐火车而不愿坐汽车.
I prefer writing a term paper to taking an examination.
我宁愿写一篇学期论文也不愿参加考试.
I prefer staying at home to going ou.我觉得在家里比出去好.
Thousands of children nowadays prefer doing their homework to a background of pop-music to doing it in a quiet room.
成千上万的孩子如今一边听流行音乐一边做作业,也不愿在安安静静的房间里做.