Interestingly, the roles of teachers now are influenced by the development in 21st century. There are some researches convey the changes of 21st teacher as facilitators helping students to discover knowledge on their own. Afterwards, based on the findings of the research constructed by Chineze et al, it reveals that the types of occupational roles of teachers in the 21st century are facilitators, life-long learner, collaborator, and assessor. Thus, to be effective English teachers in 21st century, they should reformulate and play multiple roles in teaching English.