The tradition English teaching hasn't adapted to our society.It has to be reformed completely,the key theory of the task-based teaching is that if the learners want to master the language, they must learn to use it,Application is the most important factor for the language learners.In the task-based teaching, the-specific task is the carrier,finishing the task is the motivation.,It mixes knowledge and skills,the student learn to do something by listening, speaking,reading and writing while doing something,they use the language they have learnt naturally.They develop and improve their own language in the process of using language that is to say,they learn to use,they learn the language using the language.