a child learning to talk does not learn by being corrected a

learning是现在分词,实际上是一个定语从句的省略形式：who is learning to talk动名词往往是利用其名词特性的,那么learning就是“学习的”,是表示功用的,这显然不符合逻辑。但可以说：a swimming pool游泳池,用动名词表明了pool的功用。再者,动名词作定语,要放在它所修饰的名词的前面。