高中地理重在于理,怎样把一个原理解读完全并加以广泛应用,这成为教学的难点,高考的重点。有时,课本上简略的文字或者图形而背后还有许多深刻的道理,成为学生学习的障碍。下面,以潮汐为例,谈一谈我对潮汐现象的解读与运用。一、潮汐的天文成因 High school geography focuses on reasoning, how to interpret a principle completely and to be widely used, which became the teaching difficulties, the focus of the entrance. Sometimes, there are many profound truths behind the simple words or figures in the textbook, which are obstacles to the students’ learning. In the following, taking the tide as an example, I will talk about my interpretation and application of tidal phenomena. First, the astronomical causes of tides