I'm not sure about the first sentence.....? "You called our prf. by her first name. Are you on a friendly terms with her?" (good) Here's what I would say: You called our prf. by her first name. Are the two of you friends? " Koreans usually go by first names only when they are very good friends. I think other Asian people will do the same. They like to use family names along with their titles or jobs when they are calling each other, especially in formal relation." Here's what I would say: Koreans usually go by first names only when they are very good friends. I think people from other Asian countries do the same. They prefer to use family names along with their job titles when they are speaking to each other, especially in formal situations.

1. I think you understand everything he/she is saying without putting in much effort. 2. You called our professor by her given name? Are you two friends outside of class? 3. Koreans only use given names with friends. In all other situations, they use the family or generational name with a title. Other Asian cultures probably have the same custom.

I think you can catch what she wants to say while you're more .relaxed - You called our professor by her first name. Are you on friendly terms with her? - Koreans usually go by first names only when they have become very good friends with someone. I think other Asian people do the same. They like to use family names along with their job titles when they are calling each other, especially in formal relationships.

~I think you can catch up with what she is explaining even when you are relaxed.. ~you called out prf. by her first name. are you close to her? ~Koreans only go by first names when they are good friends. I think other Asian people does the same too. They like using family names along with their titles or jobs when they call each other, especially when used formally.