地球光照图的判读是高中地理第一单元知识的重点 ,也是每年高考必考的内容之一。1 .读图判断日期地球光照图有三种形式 :极视图、侧视图、变式图 ,在各种图上判断日期的方法是观察各条纬线昼夜长短的状况和极昼极夜的范围。熟练掌握下面各种图上二分二至日的表达形式。2 .读图 The interpretation of the earth’s light map is the focus of knowledge in the first unit of high school geography, and is also one of the contents of the annual entrance exam. 1. Judging Dates There are three forms of the earth’s light map: polar view, side view, and variant view. The method of judging dates on various maps is to observe the condition of day and night and the range of polar nights. Master the following two-to-two expressions on the various charts below. 2