Since linguistics is defined as the scientific study of language, it is obvious that such a study would help a lot in language teaching and learning. Linguistics defines the nature of language learning in connection with various linguistic theories therefore it helps the teachers to choose teaching methods and techniques. Furthermore, the process of linguistic study can be summarized as follows: First, certain linguistic facts are observed, which are found to display some similarities and generalizations, hypotheses are formulated to account for these facts; and then make sure these hypotheses; finally a rule of linguistics is constructed. Our students are doing the same. They imitated what the teacher did and did what the teacher told them to. At last, they bear the usage of English in minds. Since linguistics is defined as the scientific study of language, it is obvious that such a study would help a lot in language teaching and learning. Linguistics defines the nature of language of learning in connection with various linguistic theories therefore it helps the teachers to choose teaching methods and techniques. Furthermore, the process of linguistic study can be rounded as: First, certain linguistic facts are observed, which are found to display similar similarities and generalizations, hypotheses are formulated to account for these facts; and then make sure these hypotheses; finally a rule of linguistics is constructed. They imitated what the teacher did and did what did teacher told them to. At last, they bear the usage of English in minds.