pompously       
adverb  disapproving uk/ˈpɒm.pəs.li/ us/ˈpɑːm.pəs.li/
 妄自尊大地,自以为是地
in a way that is too serious and shows that you think you are very important
  He strode around pompously, telling everyone what to do. 他迈着大步走来走去,告诉每个人该做什么。 
 See: pompous
 - More examples
 - I bragged and swaggered and pompously described my impending date.
 - "One thing at a time," he used to say pompously, as though there were some virtue in it.
 - "The Council wish me to return!" she announced pompously.
 - A group of aldermen rode pompously down the street.
 - a pompously inept barrister