A.A task means “any activity that learners engage in to further the process of learning a language ”
B.Tasks are “communicative exercises that provide opportunities for relatively realistic language use”
C.Tasks are “always activities where the target language is used by the learner for a communicative purpose in order to achieve an outcome”
D.Thus, we see more and more emphasis on communication outcomes, andthe last definition has won “a broad consensus among researchers and educators”