Do you still remember 'Object clauses'? An object clause takes the place of the object in a sentence. rmembere 要素1：引导词 从属连词：that,if/whether 连接代词：who,whom,whose,.what等 连接副词：where,how,why,whenI still remember his appearance. I still remember what he looks like. An object clause takes the place of the object in a sentence. 要素1：引导词 从属连词：that; if/whether 连接代词：who, whom, whose, what等 连接副词：where, how, why, when