1. Stimulate students' thinking and guide them to explore problems. By asking questions, students can think and explore by themselves, which not only enhances their practical ability and problem-solving ability, but also stimulates students' interest and improves their enthusiasm and initiative in learning.

2. Help students understand knowledge points and promote students' memory. Asking questions can help students understand the knowledge points more deeply, and at the same time, it can also help students review and deepen their memory of the knowledge points in the process of answering questions.

3. Guide students to form thinking habits. Questioning can guide students to form a systematic way of thinking, so that students can gradually develop good thinking habits and methods, and cultivate critical thinking and innovative thinking ability.

4. Test students' mastery. By asking questions, teachers can test the degree and depth of students' knowledge, find students' difficulties or problems in time and help students solve them.

5. Promote teacher-student interaction. Questioning can promote the interaction between teachers and students, establish a good relationship between teachers and students and improve the teaching effect. At the same time, it can also cultivate students' awareness of actively participating in classroom activities.

In a word, questioning is a very important part in the teaching process. It can not only help students to better understand and remember knowledge, cultivate their thinking ability and inquiry spirit, but also promote the interaction and communication between teachers and students.

Teachers' questions in the teaching process need to be targeted, enlightening and operable, which should not only conform to students' cognitive level, but also inspire and guide students' thinking, and at the same time allow students to answer easily.

Therefore, teachers need to scientifically design questions according to students' actual situation and teaching objectives, and adjust the difficulty and depth of questions in time so that every student can benefit from the teaching process. In addition, teachers should be good at asking questions with the help of various teaching resources and tools, such as pictures, videos and experiments, so as to increase the diversity and interest of questions, attract students' attention and achieve better teaching results.