On English Study in Terms of Input and Output

his paper presents two theories in English study-input and output.Then their respective roles in language learning are underscored by citing several examples.It shows the prominent role of input,and stresses the necessity of output as a means for English study.Meanwhile,the notion interaction is introduced for a better relationship between the input and output.It is concluded that the two parts can’t be separated from each other in English study despite their chronological order.The paper suggests that an English learner put in as much as possible and put out whenever there is opportunity.