[ai] eye ,icy
[ei] hey,say,away,gay,delay,lay,pray
[oi] boy ,toy
[au] cow,bow,endow,now,vow,chow,sow
[əu] go ,arrow,glow,willow,fiow,tow,snow
[uэ] tour,poor,sure,insure,pure,flour
[еэ] hair,air,bear,wear,pear,swear,ere,footwear
双元音【ei】【ai】 单元音【u】
tour, shower, flower,