Answer the following questions. Your answers should be clear and short.How do you account for the semantic change in the living languages?
THERE ARE GENERALLY TWO MAJOR FACTORS THAT CAUSE SEMANTIC CHANGE IN THE LIVING LANGUAGES. ONE IS EXTRA-LINGUISTIC FACTORS（HISTORICAL REASON, CLASS REASON AND PSYCHOLOGICAL REASON）. THE OTHER IS LINGUISTIC FACTORS（SHORTENING, THE INFLUX OF BORROWINGS, AND ANALOGY）.
OR
AS TIME PASSES, CHANGES KEEP TAKING PLACE IN SOCIETY AND OUR DAILY LIFE. NOW, CONCEPTS, IDEAS AND NEW THINGS EMERGE CONTINUOUSLY. MAN HAS COME TO KNOW MORE AND MORE ABOUT THE WORLD AROUND. ALL THIS IS REFLECTED IN LANGUAGE. THE CHANGE OF MEANING MAY ALSO BE CAUSED BY INTERNAL FACTORS WITHIN THE LANGUAGE SYSTEM.
