en结尾的a：broken,fallen,chosen,sudden,spoken,laden,litten,rotten,linen,dozen.
en结尾的v：strenghten,widen,brighten,broaden,weaken,sharpen,melten,shorten,lengthen,lighten,fatten,even.
意思可参考字典
en结尾的a：broken,fallen,chosen,sudden,spoken,laden,litten,rotten,linen,dozen.
en结尾的v：strenghten,widen,brighten,broaden,weaken,sharpen,melten,shorten,lengthen,lighten,fatten,even.
意思可参考字典