问题描述: help:how many diphthongs are there in american english? 1个回答 分类:英语 2014-12-05 问题解答: 我来补答 8个 [ ei ] cake hey wait great[ ai ] like my buy light[ ɔi ] join boy joy coin[ әu ] old coat yellow[ au ] out how now loud[ iә ] idea ear deer here [ eә ] bear chair where there[ uә ] poor tour sure assure 展开全文阅读