1、cook过去式cooked 过去分词cooked help过去式helped 过去分词helped add过去式added 过去分词added look过去式looked 过去分词looked hop过去式hopped 过去分词hopped work过去式worked/wrought 过去分词worked/wrought live过去式lived 过去分词lived study过去式studied 过去分词studied。