Memory Language DevelopmentVersion en ligne Learn about How Do Children Learn Language? par Shirley Michelle Niquinga Toapanta Babies learn which phonemes belong to the language they are learning and which don’t. Children are not learning words, exactly. They are actually learning morphemes,which are the smallest, discrete chunks words can be broken into. Children continue to expand their vocabulary and develop more complex language. Language Development Stage 3: Learning Sentences Language Development Stage 2: Learning Words. Infants can distinguish between language sounds and other noise. They can put words in the correct order. At this point, children are able to attach meanings to words. Language Development Stage 3: Learning Sentences Language Development Stage 1: Learning Sounds Language Development Stage 1: Learning Sounds Language Development Stage 2: Learning Words.