关于like doing sth和like to do sth.

语法规则,单数第三人称动词原形的变形是要加s,进行时才用ing.
同时,like 后即可跟to do 也可跟doing,没有很明大的差异,但是用起来也有细微的差别.
like doing 一般表示习惯性的一直喜欢做的某种事情或活动,如：She likes swimming, and she swims every Saturday morning.
Like to do 则含有一定的主观意愿,表示这个时候想做什么事情了,而不是强调一种习惯性的喜好.如：She liked to go to swim, so I had to stay at home.