人教版英语必修五课件unit5-2.ppt

1．barrier n. 1)屏障，障碍物 ①The crowd had to stand behind barriers. 人群只好站在屏障物后面。 ②The police put up barriers to control the crowd. 警方设置障碍控制人群。 2)障碍，阻力，关卡 the removal of trade barriers 贸易壁垒的消除 3)分界线；隔阂 There was no barrier between reality and fantasy in his mind. 在他的头脑中，现实与幻想之间没有真正的界线。 知识拓展 the barrier between A and B A与B之间的屏障/界线 the barrier against sth. 防止……的屏障 the language barrier 语言障碍 活学活用 完成句子 肤色不应是成功的障碍。 The colour of ones skin should be________ ________ ________success in life. 答案：no barrier to 2．poison 1) n. (1)[C U]毒药，毒物，毒素 He tried to kill himself by taking poison. 他曾试图服毒自杀。 (2)极有害的思想(或心情等)，精神毒药 Some people say that selfishness is a poison in our society. 一些人说自私是我们社会的一害。 2) v. (1)～sb.(with sth.)毒死，毒害 Someone tried to poison our dog. 有人想毒杀我们的狗。 (2)下毒，在……中放毒 He feared that someone had poisoned his food. 他害怕有人在他的食物中下了毒。 (3)毒化，败坏，使恶化 Envy of his friends success poisoned his mind. 嫉妒朋友的成功使他产生了邪念。 知识拓展 1)poisoning n. ①[C U]中毒，服毒 Food poisoning can cause death. 食物中毒可导致死亡。 ②毒害，毒杀，投毒 The police suspected poisoning. 警方怀疑有人下毒。 2)poisonous adj. 引起中毒的，有毒的 Millions of tons of waste and poisonous gases are sent into the air with the smoke. 数百万吨的废气和毒气随着烟尘散发到空中。 活学活用 Gases from cars are________the air of our cities. A．harming　　　　　　　 B．hurting C．poisoning D．injuring 答案：C 3．complex 1)adj. 复杂的；合成的；难懂的 ①Its a complex question and your answer was too pat. 这是一个复杂的问题，你的回答太快了。 ②The army is an extremely complex organism. 军队是极其复杂的组织。 2)n. 复合物，综合体 ①A petrochemical complex is to be built here. 这儿将建造一个石油化学联合企业。 ②There is a sports complex with everything needed for many different activities. 有这样一个综合体育馆，里面各种运动所需设备应有尽有。 活学活用 完成句子 目前的局势非常复杂。 The present situation________ ________ ________. 答案：is very complex 4．variety n. 1)[C](同一事物的)不同种类，各种式样 ①There is a wide variety of patterns to choose from. 有种类繁多的图案可供选择。 ②Hospitals deal with disease of every variety. 医院诊治各种各样的疾病。 2)[U]变化；多样化；多变性 We all need variety in our diet. 我们都需要饮食多样化。 知识拓展 1)a variety of...＝varieties of... 各种各样的 I have a variety