there are (12) months in a year.march(21 )and may make spring.(21 )june and (September 19/20 )make summer.
september (21 ) and (December 20 ) make fall.(December 21) ,and (1)february make winter.
以上的冬天是美国式,美国人以2月2日 February 2,Ground Hog Day 为春天的开始,而英国则以3月21日为春天的的第一天.