One is to know what to say, that is, to clarify the purpose of communication. If the purpose is not clear, it means that you don't know what to say, and naturally others can't understand it, and naturally you can't achieve the purpose of communication.

Second, to know when to say it is to master the time of communication. It is obviously inappropriate for you to let your communication partner discuss the next party with you when you are sweating at work. Therefore, in order to achieve good communication effect, we must grasp the communication time and temperature.

Third, we should know who to talk to, that is, we should be clear about the object of communication. Although you speak very well, you choose the wrong person, and naturally you can't achieve the purpose of communication.

Fourth, to know how to say it is to master the method of communication. You know who to talk to, what to say and when to say it, but you don't know how to say it, and it is still difficult to achieve the effect of communication. Communication means using the language that the other person can understand-including words, intonation and body language, and what you need to learn is to communicate effectively by observing these communication languages.