英语形容词，名词，动词，副词 互变方法规律一名词变形容词： 1名词后加-y, 如： lucklucky, cloudcloudy; windwindy; rainrainy; sunsunny, snowsnowy noise-noisy healthhealthy 2在名词后加-ly, 如： friendfriendly lovelovely daydaily 3方位名词加-ern，如： easteastern westwestern southsouthern northnorthern二动词变形容词 1.词尾加ful: use - useful, care - careful, help - helpful,thank - thankful peace - peaceful, forget - forgetful, play - playful, succeed - successful, wonder - wonderful 2.词尾加
