And what can make you know what is the Striking Calamity?
Tafseer
{ وما أدراك } أعلمك { ما القارعة } زيادة تهويل لها وما الأولى مبتدأ وما بعدها خبره وما الثانية وخبرها في محل المفعول الثاني لأدرى.
{And what will make you know} I will make you know {what the Calamity is} to make it more frightening. The first “what” is the subject and what comes after it is its predicate. The second “what” and its predicate are in the position of the second object of “I know.”