1.vocabularies are limited,cannot carry on the expression carefully:For example " my mother is good mother,not only she is very good to me,she all very is also good to each person.She really is a good mother.The “simple repetition words and expressions have limited the language expressive force obviously. 1.vocabularies are limited,cannot carry on the expression carefully:For example " my mother is good mother,not only she is very good to me,she all very is also good to each person.She really is a good mother.The “simple repetition words and expressions have limited the language expressive force obviously.