Linguistics can be defined as the scientific study of a particular language. 2. Language is arbitrary by nature but is not completely arbitrary. 3. It is generally believed that modern linguistics is mostly descriptive, diachronic, and emphatic on writing . 4. Animals are born with the capacity to produce the set of calls peculiar to their species, while human beings do not have this genetic basis. 5. Animals cannot talk about the things except those about food, danger, enemy, etc. because the communicative signals of animals do not have property of displacement. 6. We can use the word “ word ” to talk about a word, we can talk about “ talk ” , we can think about “ thinking ’ , this shows that language has a metalingual function. 7. When someone breaks a bowl or plate on a special occasion in China, the people present are likely to say “ sui sui ping an ” (every year be safe and happy)as a means of controlling the magic forces which the believers feel it might affect their lives. T his shows that language has an interpersonal function. 8. Language is the instrument of thought, record of facts, and people often feel need to speak their thoughts aloud. T his indicates that language has an expressive function. 9. A baby ’ s babbling, widespread use of verbal dueling, poetry writing as well as self-singling all show that language can be used to amuse the speaker.