There are many standards of a good lesson. But I think the following standards are of great importance:
We must impart correct knowledge. As a teacher, we need to make sure that we make no mistakes in knowledge. So we need to make enough preparation for the class, be responsible for the words we say in class and keep studying.
The lesson must be designed with reasonable structure. For example, a reading class can be divided into several parts: warming-up, pre-reading, while-reading, post-reading, summary and homework. In this way, students can gradually understand the article step by step and consolidate what they have learned.
Only when we achieve these standards, can the students absorb the knowledge well.