1. Provide children with correct pronunciation models: Children need to hear the correct pronunciation in order to learn it. Parents can imitate the correct pronunciation, or let their children listen to recordings, watch videos, etc.
2. Practice mouth shape and tongue position: Some pronunciation problems are caused by incorrect mouth shape or tongue position. Parents can improve their child's mouth shape and tongue position through exercises.
3. Encourage children to talk more: Talking more can help children exercise their oral muscles and improve their pronunciation ability. Parents can have simple conversations with their children, or let them read stories aloud.
4. Use a speech corrector: A speech corrector is a device specially designed to help children improve their pronunciation. Parents can use speech correctors under the guidance of professionals.
5. Seek professional help: If the child's pronunciation problem is serious, parents can seek help from a professional speech therapist. A speech therapist can develop a personalized treatment plan based on the child's specific situation to help the child improve his pronunciation problems.