an important concept for teacher to understand is that while students are at the begining levels of language learning,that is,they are still developing thier proficiency,fluency and accuracy often work against each other. before grammar rules become automatic and while learners are still acquiring essential vacabulary item, applying the rules and searching one's memory for the righ words can be laborious mental processes,which slow the learners' speech and make them seem dysfluent. likewise,language learners can sometimes speak quickly,without hesitating to apply the rules they have learned,but doing so may decrease thier accuracy (that is,the number of errors they make in speaking may increase).