One need to know some English ceremony when learning English ,so that he can communicate better with the foreigners.
Learn to must know dyadic etiquette of English time English , can communicate with the foreigner much better like this
You must be polite in learning English so that you can have a better communication with foreigners.
You need to understand English courtesy in learning English to communicate better with the foreigners.
答：绝对没问题，都听得懂，只是不太习惯详情>>
