Facing the challenges of the new century, adapting to the rapid development of science and technology, adapting to the requirements of career changes and accelerating the frequency of knowledge updating, it is far from enough for a person to learn knowledge only at school, and everyone must study for life. Lifelong learning ability has become a basic quality that a person must possess. In the future development, whether our students are competitive, have great potential and have the ability to master knowledge in the information age depends fundamentally on whether students have the ability of lifelong learning. It has become a problem that many countries in the world attach great importance to letting students learn to learn in the basic education stage. As the book "Learn to Live" published by UNESCO said: "The illiterate people in the future are not illiterate people, but people who have not learned how to learn." Life-long learning is generally not carried out at school and is not accompanied by teachers. It all depends on a person's autonomous learning ability. It can be seen that autonomous learning ability has become the basic ability of human survival in 2 1 century.

At the same time, as educators, we are more aware that in today's era of knowledge explosion, it is impossible for any education to impart all human knowledge to learners, and the task of education must be changed from letting students learn knowledge to cultivating students' learning ability, which is the essence of learning.