Good morning, good afternoon, and good evening!

It is suddenly getting much colder in Korea.

Especially, the flu is so rampant. Take care of your health.

I'd like to ask you what a social linguistic failure is.

From the book i read, the example of it is follows:

Native teacher: Wow, you have a good pronunciation!

Student: ...

and i also want to know "pragma linguistic failure"

(i guess 'pragma' might mean 'pragmatic')

The example of it is follows:

Native Teacher: Would you like some more?

Student: No, i would not.

would you please explain what they are and mean?

and if you can, please give me more examples and compare each other.

and if you know more about them and are not bothered,

let me learn about socio-pragma linguistic failure with examples :)

Thank you in advance!

Taken from the link in Clive's post:

  Example 9                                         
     Situation: Chinese non-English major sophomores       
asked a professor in the United States to buy and mail a  
dictionary for them. Some of their requests are as follows.
     I want you to buy the dictionary.                     
     Buy the dictionary for me and I will be happy.        
     You can buy the dictionary for me.                   
     I expect that you can deliver the dictionary to me.   
     (Xu, 2001, 32)                                        
     Xu (2001) reports that the expressions above were     
very direct. There was a great social distance between     
the students and the professor, and they had no right to   
force the professor to do anything for them, but some      
students failed to choose proper strategies to soften the  
force of the face threatening act. The non-target-like     
request strategies are indicative of the students’         
pragmalinguistic incompetence, which resulted in their     
inappropriate sociopragmatic use.