1, in life he will have understanding, expression barriers, please understand them, it is possible that he said you do not understand, or he does not understand what you say, do not know how to answer you, then please give him a smile, a smile is better than the world’s most beautiful language; 2, with him before talking to attract his attention, talk with simple words, slow down the speed of speech, continuous feedback, in the conversation at any time to observe his attention Please pay attention to the content of the conversation and the choice of the way to talk: although simple and within his ability. Questions that he can answer with yes and no; selective questions, e.g., do you want rice or noodles. Topics that interest him, topics that are closely related to his life. In conversation, you can give him verbal, body language and other tips; 4, if he does not understand you, repeat what you said, or change another way to express your meaning, with exaggerated body language, gestures, facial expressions, intonation to help him understand; 5, it is important to teach him to learn the daily life greetings, which can enhance his desire and confidence in communicating with others; 6, please find out more about his strengths: he may be very kind-hearted, he may be joyful and good-natured. He may be kind-hearted, he may have a good sense of music, or he may be great at drawing; 7. Observe his every progress carefully and give him encouragement whenever and wherever possible; 8. If he keeps making mistakes in conversation, please don’t pay too much attention to them or correct them, and accept his way of speaking; 9. Remember that he’s an adult, and even though his speaking ability is less than a kindergarten child’s, please don’t talk to him as you would to a child; 10, Encourage him to be independent and let him help others, he needs constant encouragement; 11, often give him a friendly friend-like smile, positive and optimistic answers, listen to him intently, do not show impatience or disinterest; 12, when he expressed frustration and excitement, you should remain calm, stand there quietly, show support for him, and wait for him to finish venting before talking to him; 13, do not treat him as a patient, but rather A living, flesh and blood of a normal person, you can make friends with him, you can also ask him to encourage him to participate in daily life planning, preparation, decision-making on major events at home.