Compare derivational affixes and inflectional affixes in English.
答案是:Inflectional morpheme do not change|the word class of the word but only add a minute or delicate grammatical meaning to the stem|That is it provides further grammatical meaning to the existing lexical item|In English|inflectional affixes are mostly suffixes|Derivative morpheme often change the lexical meaning and the word class|That is it provides lexical information to the existing lexical item.
