In English, conversion is a word-building strategy that changes a word's [ Select ] spelling word class orthography pronunciation without adding any morpheme, as in to butter (the bread), where a verb is derived from a [ Select ] noun adverb verb adjective . Another strategy, compounding, builds new words by combining two or more [ Select ] bases affixes roots , and compound stress in English typically falls on the [ Select ] last middle second first syllable, as in méatball. The pair foot / feet illustrates [ Select ] suppletion compounding conversion internal change , while the pair go / went illustrates [ Select ] conversion backformation suppletion internal change .多重下拉选择题