how to improve my oral English and listening comprehension
I am a teacher. I have been teaching ,I teach Chinese and English in a middle school for many years. I can understand English grammar. grammer . I can also understand common English articles. But when I talk with a foreigners, sometimes I can't understand them. However, when they write down their words, I can understand what they mean. know the meaning. What should I do? How can I improve my speaking and listening?