在名词后面加-y可以变成形容词。例如：rain—rainy, cloud—cloudy, wind—windy, snow—snowy等。
注意：如果名词以重读闭音节结尾，且词尾只有一个辅音字母，这时应双写词尾的辅音字母再加-y。如：sun—sunny, 等。
湿的WET 冷的COLD干的DRY湿的WET暖的WARM热的HOT凉爽的COOL晴天Sunny雪天Snowy有雨的RAINY大风的WINDY雾天Foggy小雨Sprinkle中雨Moderaterain大雨Heavyrain暴雨Torrentialrain雷阵雨Thunder-shower微雨Lightrain多云cloudy阴天cloudyday
例句：The weather was lazy.这天气使人无精打采。
恶劣的天气使救援队丧失了机动性。
每逢多雾天气，公车往往误点。
例句：We had glorious weather for our cruise, sunshine all day and every day. 我们这次巡航天气实在太好了，一连几天阳光普照。
2. It was too hot and my heart was stuffy.天气太热，心里发闷。
3. It was another sunny day, so happy！ 真高兴，又是一个艳阳天！