ar：art,artist,car,care,careful
or:doctor,actor,bored,door,forest
无元音：不存在
有元音：任选五个单词
er:writer,dancer,singer,stranger,treveller
ir:irregular,air,bird,sir,birthday
ur:burt,hurt,fur,journey,nurse ar：art,artist,car,care,careful
or:doctor,actor,bored,door,forest
无元音：不存在
有元音：任选五个单词
er:writer,dancer,singer,stranger,treveller
ir:irregular,air,bird,sir,birthday
ur:burt,hurt,fur,journey,nurse