The research objects of all three are languages. The interpretation of image, linguistics is the dishes in the refrigerator, you need to understand which are meat and which are vegetables; Language acquisition is a good prescription. You have to understand what meat will taste with what dishes. And language teaching is to teach you how to cook a dish.

Linguistics mainly studies the language itself, including its origin, development, language family, language structure characteristics and so on. In teaching Chinese as a foreign language.

Language acquisition, as its name implies, is the study of how people learn and use a language, involving the study of the language they have learned, that is, the target language, and the study of the laws of language acquisition (such as i+ 1 theory, the order of difficulty in language structure, the critical age of language acquisition, etc.). ), language acquisition error research (that is, error research in second language learning) and so on.

Language teaching is a subject that studies how to teach language. In addition to the above two parts, you need to learn educational psychology and teaching skills, and you are willing to learn educational policies according to teaching needs.

In second language teaching, to teach a language, besides speaking, we need to know its characteristics and usage rules. In addition, we should understand the principles of language input and output, possible mistakes in language learning, and point out and correct students' mistakes. With these foundations of linguistics and language acquisition, teaching can be vivid and practical, meet the needs of students, arouse their enthusiasm and make the classroom successful.