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and feelings. Sometimes, there is no need to convey one’s minds and emotions. What’s more, only with the use of language can they not be conveyed. Whereas, non-language information sent by body and nonverbal messages connected to environment may tell others. Through some nonverbal cues, others are able to understand the sender’s verbal information in the whole .It naturally leads to the fact that verbal communication sends information in a single way, while nonverbal communication may explain and complement the messages that language can not convey or impossibly convey through various ways.

4.1.2 Direct vs. Indirect
Verbal communication directly sends information through language, while nonverbal communication indirectly conveys messages through some non-language cues such as body languages, physical touch, spatial use and so on .When communicating through human language, people receive direct information. Then, in a conversation, the topic, the content, the direction and the purpose are obvious. Communicators are able to directly gain necessary information and they will reach an agreeable idea. Nonverbal communication, however, may indirectly bring a great variety of messages. Although nonverbal communication differs in different cultures, some basic emotions reflected by behaviors such as smiling, frowning, laughing and crying have common meanings in human communication. A smile signifies happiness, greeting, and welcome; Frown may display disagreement, unhappiness, discouragement, dissatisfaction, anger and so on. On the other hand, people in different culture have different attitude towards physical contact, spatial use and so on. Such indirect information without the aid of language is more effective than that of verbal language.

4.1.3 Conscious vs. Unconscious
     It is a usual fact that people think about what they want to say before speaking or writing, more nonverbal messages are not conscious. Of course, someone really focus on some of their nonverbal behavior: smiling, as people want to try their best to convince others that they are happy or making sure the handshake is firm to show that they are straightforward and decisive. Yet there are so many nonverbal signals that are unlikely for people to consider and dominant over all of them. Then, their subtle frowns may deny their smiles, and their eye movement may destroy all the self-confidence of their strong handshakes. The unconscious nature of most nonverbal behavior explains the reason why it can offer so many valuable cues about how others are feeling and thinking.
     Verbal communication and nonverbal communication are inseparable. The two depend on each other. Thus, both are interactive. It is difficult to image that how they could take into effect without either one. Much of the real value of these communications of two kinds lies in their differences.

4.2 Function of nonverbal communication
     Nonverbal communication is also called silent language because it does not use sound as media. The messages sent by nonverbal communication are not in such an orderly, sequential manner. Nonverbal communication may convey one’s soundless and true feelings in the inner world. In interpersonal communication, nonverbal communication is unlikely to be replaced by spoken language. Nonverbal communication is the linguistic signal system that people exchange thought, c