春天
spring [spri?]
夏天
summer ['s?m?]
秋天
autumn;fall ['?:t?m]
冬天
winter ['wint?]
關於春夏秋冬的英文：
As we know, there are four seasons in a year: spring, summer, fall and winter.
Spring is the best season of the year. It's from March to May. The weather gets warmer, and the days get longer. Everything wakes up, the trees turn green and flowers come out. It's seeding-time.
Summer is from June to August. It's a very hot season. It often rains and the corns grow fast. We will have a summer holiday and go swimming.
Golden fall is harvest-time. It's from September to November. The farmers are busy getting in the corns. The days get shorter and the nights get longer.
Winter is from December to February the next year. it's the coldest season of the year. It often snows, and we can play with snows or go skating. We can enjoy the Spring Festival.
我們的地球在圍繞太陽不停地公轉的同時，也在繞自身的地軸自轉，不過地軸並不垂直於公轉軌道面，而是有壹個23度27角分的傾角。正是因為這個傾角的存在，才會使太陽在地球表面的直射點在南、北回歸線之間移動，從而形成了春夏秋冬四個季節。
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