One way in which languages change is that they can change morphological type. Read these facts about Kriol in relation to its source languages: 

 Kriol marks past tense with free morpheme bin, while its source languages mark past tense with verb inflections

 Kriol marks plurality with free morphemes such as lad (from 'lot') or mab (from 'mob'), while its source languages use noun inflections. 

 

a) What does this tell us about the relationship between new language formation and morphological type?

 

 b) What is one fact about Kriol that runs counter to this generalization?