For foreign language learners, the habits that they have in pronunciation of their mother tongue play a negative role when they learn a new language pronunciation.
对于外语学习者来说，已形成的母语发音习惯对于新语言语音的学习具有负迁移作用。
2
In addition attention should be paid to health habits usually do not bite finger do not bite a pencil top foreign body the teeth do not lick the tongue.