Unit 1 Cultural relics第 一 讲MAIN CONTENTS 1. 核心词汇 2. 句子控 3. Have a try PART ONE Vacabulary Phrase 核心词汇核心词汇valuable adj. 教材P1原句 Does a cultural relic always have to be rare and valuable? 文物一定要稀有并有价值的吗?be valuable to(prep.). 对有价值贵重的；有价值的valueless adj. 无价值的；没用的 = worthlessvalue n. 价值；重要性be of value to = be valuable torare adj. 稀罕的；稀有的；珍贵的It is rare for sb. to do sth. 某人难得/很少做某事It is rare for him not to hand in his homework on time.他很少不按时交作业。rarely adv. 不常；很少；难得注：rarely, seldom, never等表示否定意义的副词用于句首时，
