If a child pronounces simple words clearly and pronounces them correctly, it means there is no problem with his pronunciation. In the process of children learning to speak, there is often a phenomenon of language laziness, which leads to the lag of children's speech, but in any case, it is not normal for children over 3 years old to express themselves normally. According to your introduction, they think there are many psychological factors. I suggest that your parents don't put too much pressure on their children, but communicate with them patiently, don't talk to them with gestures, especially when he communicates with you with gestures, don't respond, and be sure to answer them with words. Communicate face to face with children, eye to eye, speak slowly and articulate clearly. Each training time should not be too long, but training should be interspersed in every detail of life. In addition, you can't force your child (such as who he calls, what he says, etc.). ). Everything goes with the flow. When the child's language expression ability is gradually enhanced, he can be guided to express himself in language with gestures that he does not understand. When he expresses a meaning with complete vocabulary and language, he should make an expression of surprise and epiphany, so that children can feel a sense of accomplishment and satisfaction, appreciate the charm of language and like the expression of language. Try it, it will work.

The above suggestions are limited to children with normal pronunciation, but lazy language and slight psychological disorder. If they have difficulty in pronunciation or serious psychological obstacles, they should see the relevant doctor in time for further correction.