... defines: ‘Nhim v chính ca bài bình lun là gii thích, ct ngha mt s kin, mt quá trình hoc mt vn trong i sng kinh t, chính tr và i sng vn hoá Bài bình lun phi có s ánh ... requires the external forces require the task to be done,’(Bernadette, 2001, p.112). Need is stronger than should, but weaker than must and have to ((Bernadette, 2001, p.113). Should has the ... back to being a defender, not a violator, of human rights. It seems that the objection is too strong to start with the concession of the other side’s viewpoint, so through-argumentation is employed...