learn后面是加doing还是to do?如题

learn后面是加doing还是to do?如题 bear后面是加to do还是doing? He is going to learn( )the guitar,是 learn to play 还是 learn doing?一般将来时态后面是跟动词不定式还是动名词? refuse后面加to do 还是doing adjust to 后面加doing还是do? spend后面加doing还是to do? hard后面加doing还是to do 到底是learn to do sth还是learn doing sth 是learn to do sth 还是learn doing sth 快 think 后面是加doing 还是加do 还是加to doRT find后面是加do还是加doing还是加to do? miss后面加什么?miss后面加什么宾语?是to还是doing learn和study 加doing 还是to do 7.learn to do 还是learn doing make a difference后面到底是加to do还是加doing? do you mind 后面是加doing sth还是加 to do sth 宾格后面加动词原型吗是 to do还是do还是doing see后面是加什么[doing还是to do还是did,done]