到底是learn to do sth还是learn doing sth
learn+to do sth 还是 doing sth
learn to do sth,还是learn doing sth
请问learn to do sth.是否等于learn doing sth.
有learn doing 等于learn to do sth
是learn to sth还是learn sth (learn English or learn to English)
learn 用法learn doing sth 这种用法有没有?急用,learn to do sth 和learn do
我想知道 learn to do sth.和learn doing sth 的用法和区别
learn to do sth造句
learn to do sth.造句
learn sth from sb Learn to do sth 造句
learn to do sth. 和learn sth. 的区别
avoid 到底是doing sth 还是to do sth 还是两个都有