The second, third, and fourth parts explain the standards for the classification of spoken English, the current problems in English learning and the methods to solve them.
The second, third and fourth parts are divided from the standards of spoken English grade, the current problems in English learning and the methods to solve the problems are explained.
The second part, the third part and the fourth part respectively explain the standard of dividing oral English level, the existing problems in English learning and the methods to solve them.