how to improve oral english??

  i am urgently to improve my oral english ,but i can not find a good way ,when i am in university i study english just for CET4--CET6,and i had never speak english even anserw teacher's  question i also use chinese ,but i read  it loudly every morning,(just read for myself).i thought that after i graduate i will not use english ,but every one will never know what will happened in future,and i had never know i will engaged in export business ,at that time i suddenly remind a chinese idiom :the  knowledge when you use it just find it poor(sorry do not know the right express)

    now i realized the importance of oral english ,so i decide to improve it,,and i need every friends' help ......

   and i want to give every colleger a suggestion is that pls do not give up practice your oral english !!!!!!