prefer 做动词时用法较多，而且容易搞错。
prefer to do sth更喜欢做某事
Prefer sth to sth 比起后者更喜欢前者；喜欢... 胜过...
prefer doing to doing 比起做后面的事更愿意做前面的事
prefer ... rather than... 意...而不愿...
举例：
prefer doing to talking喜欢做而不喜欢说
prefer to die rather than surrender宁死不屈
prefers coffee to tea.喜欢咖啡胜于茶
prefer to do than do(do:所有的动词原形)
prefer doing than doing(doing:所有的动名词)
