词根:prais, preci = value, 表示“价值”
appraise v. 评估(ap加强动作+praise→给以价值→评估)
appraisal n. 评估,评价(appraise+al)
precious a. 珍贵的(prec+ious→有价值的)
appreciate v. 评价;欣赏(ap+prec+iate→给以价值→评价;欣赏)
appreciative a. 有欣赏力的(appreciate+ive)
appreciable a. 可估计的;可察觉到的(ap+prec+iable→能估计的)
depreciate v. 降价,贬值(de去掉+prec+iate→去掉价值→贬值)
depreciation n. 贬值;轻视(depreciate+ion)