Dependent learning: when there is a generic relationship between the new concept to be learned and the concept to be assimilated in the mind, the concept learning at this time is dependent learning. Ausubel believes that the interaction and function between old and new knowledge can be seen in three levels: 1, and generic learning. At this time, the original concepts in the cognitive structure are abstract, generalized and inclusive, which is higher than the new knowledge, and the old and new knowledge establish a subordinate relationship. When new knowledge belongs to old knowledge, subordinate learning or generic learning comes into being. Generalization and inclusion are higher than new knowledge, and this kind of learning is called upper learning when the old and new knowledge establish upper contact. 3. Parallel learning of new knowledge has no special relationship with the original concept, and this kind of learning is parallel learning.