더군요~ is there no difference ?_?
How can I use this grammar form?
there seem to be many types of the similar thing..
"셨군요"
"쎴더군요" (?)
"군요"
"더군요"

please and thank youuuu

Question

더군요~ is there no difference ?_?
How can I use this grammar form? 
there seem to be many types of the similar thing..
"셨군요"
"쎴더군요" (?)
 "군요"
"더군요"

please and thank youuuu

Answer

셨군요/셨(더)군요.  why use '더' ? just feeling difference. if use '더', emphasize the meaning. But, actually, no meaningful to distingulish 셨군요 from 셨더군요.

셨=polite+past tense  
Do=하다. Do=하시다(polite). Did=했다. Did=하셨다(polite)
Ex.  하셨군요= you did it(polite). 했군요 = you did it(less polite)


Verb+군요, Verb+셨군요

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