learn to do与learn doing的区别，并举例说明

Learn to do sth 学做某事
Learn Sth 学某样东西

比如
Learn to swim.
Learn to Swimming.

注意：这里的Swimming作为名词而使用

本身 Learn to do 是正确的

不可以Learn+动名词

这样一题.Having learned ___skillfully,she went on learning _____..A。to skate swimming B.skating swimming .C.to skate to swim D.skating to swim
learn to do是去学什么（还没学）.learn doing是学会了某事
1.Having learned ___skillfully,she went on learning _____..选D.熟练掌握了

Learn to do sth 学着做某事
Learn sth 学会某些东西
有很明显的差别
to do sth.和doing sth.通常作补语来用，也就是说用在动词后面构成固定的词组，很多常用的词组是需要记忆的。
如tell sb to do sth,ask sb to do sth, promise sb to do sth. learn to do sth, start to do ,forget to do (还没有做)，等等；又如，admit doing , escape doing, enjoy doing, forget doing(已经做了)等等。