1. I accidentally knocked over the vase and had to sop up the water with a paper towel.2. The old lady was knocked down by a bus as she crossed the street.
 knock over something knock somebody downknock over something = 把某東西碰倒，例如碰倒花瓶knock him down = 把他碰倒，例如他被車子碰倒或撞倒
Smith 先生宣誓就職成為非洲的新財政部部長。 (請填空)
Mr. Smith has been sworn in as Africa's new Minister of Finnce.