Online teaching has become an educational necessity in the present era. In early 2020, an outbreak of disease kicked off this new model of education, and teachers and students suffered a lot from online teaching during the isolation at home.Today we will talk about the advantages and disadvantages of online teaching.Benefits of online classes:1. With a wider range of learning resources, teachers and students can have more time to look up information, which is more convenient than traditional searching for information in different places.2. Students can devote more energy to their lessons than in school, which is conducive to self-management.3. Students attend classes at home accompanied by their families. Under the supervision of their families, students may improve their learning efficiency.4.Online teaching can reflect the emergence of new domestic culture and the development of national economy, which is something we should be proud of.Disadvantages of online teaching:1. Sometimes people are unable to continue learning because of equipment or operating problems. It is inevitable that when learning is interrupted by an accident, people are powerless to watch what happens and then solve the problem.2. A small number of students lose their concentration in class, which may cause them not to do the exercises after class.3. Some of the materials searched on the Internet may not be true, most students do not have much time and energy to verify, which is a great harm to study.Of course, studying at home is safer than going out. Avoid the direct transmission of bacteria from person to person.Laziness is always the natural enemy of learning! To learn knowledge effectively and quickly, you must learn to manage yourself!It is better to write with pen than to read many books.