仁爱八年级英语第二章第三节第1课时.ppt

* journalist question go ahead prevent build crowded finally all the time 记者 问题 继续 (进行，说) 阻止，防止 建造，建立 拥挤的 最后，最终 一直 throat 喉咙 Internet 网络 Revision What should we do to keep healthy? Do you know the flu? What is the flu? 流行性感冒（简称流感）是由流行性感冒病毒（简称流感病毒）引起的急性呼吸道传染病，临床表现为发热、头痛、肌痛、乏力、鼻炎、咽痛和咳嗽，可有肠胃不适。流感能加重潜在的疾病（如心肺疾患）或者引起继发细菌性肺炎或原发流感病毒性肺炎，老年人以及患有各种慢性病或者体质虚弱者患流感后容易出现严重并发症，病死率较高。 cough fever the symptoms of the flu headache sore throat tiredness muscle aches breathing difficulties chills and shivering 1. go ahead是口语中一个十分有用的表达。它有三种基本用法。在课文当中表示同意对方的请求，根据情况可译为：说吧，做吧，开始吧，进行吧。 e.g. A: May I start? 我可以开始了吗? B: Go ahead. 开始吧。 2. prevent vt. 防止，阻止，预防 e.g. Vitamin C is supposed to prevent colds. 维生素C被认为能预防感冒。 prevent … from doing … 阻止；制止 e.g. Who prevents their plans from being carried out? 谁阻止他们实施计划? They prevent him from driving because he is drunk. 他们制止他开车因为他喝醉了。 3. build sb. up 增强……的体质；使更加 强壮 e.g. You need more protein to build you up. 你得多吃蛋白质以增强体质。 4. all the time 一直，始终 e.g. The letter was in my pocket all the time. 这信一直在我的口袋里。 5. crowd n.人群 e.g. There was a crowd of people in front of the town hall.  市政大厅前有一群人。 v. 拥挤，挤满，挤进 e.g. Passengers crowded the platform. 月台挤满了乘客。 crowded adj. 意为“拥挤的”。 6. finally adv. 终于，最终 e.g. The performance finally started half an hour late. 延迟了半小时后演出终于开始了。 When they finally arrived it was well past midnight. 他们最后到达时已是第二天凌晨。 How can we prevent the flu? Look at the following pictures and try to give some advice. *