ing 就是进行时,例如正在下雨,用it's raining
y 是形容一种天气状况,多云的,it's cloudy
再比如:rain来说,rain作动词时,一般用现在进行时:It's raining.rain作名词时:There is a heavy rain.有时候也用rain的形容词rainy,那就要用在be动词后面当表语:It's rainy today.
ing 就是进行时,例如正在下雨,用it's raining
y 是形容一种天气状况,多云的,it's cloudy
再比如:rain来说,rain作动词时,一般用现在进行时:It's raining.rain作名词时:There is a heavy rain.有时候也用rain的形容词rainy,那就要用在be动词后面当表语:It's rainy today.