九年级英语下册 module 3 now and then unit 1 people are healthier today学案2（无答案） 外研版.doc

Module 3Unit 1 People are healthier today Key words 1. debate n/ v. 辩论 After a long debate the bill was passed. 通过长时间的辩论,议案获得通过。 They debated on the subject of life and death. 他们讨论了生与死的问题。【词组】 be under debate 正在讨论中 debate sth with sb. 与某人争论某事 n. 病,疾病 ill adj. =sick 生病的 He missed lots of lessons because of illness. 他因病耽搁了许多功课 illness 与 disease 的区别: disease n. 尤指感染或传染导致的疾病, 或者是身体某个部位得病。 have /suffer from a disease 患病如: Heart disease runs in his family. 他的家族有心脏病史。 She suffers from a rare disease of the brain. 她患上了一种罕见的脑病。 illness 多指身体不舒服的状态或时间, 而这种不舒服可能是某种疾病引起的。如: He died after a long illness. 3. prevent v. 防止;预防其后面可接名词,代词或 v.-ing 作宾语。例如: We must do our best to prevent the air pollution. 我们必须尽力阻止空气污染。 prevent 一般用于短语 prevent sb. from doing sth. “阻止某人做某事”, from 可以省略。例如: Who can prevent people ( from ) cutting down too many trees ? 谁可以阻止人们砍伐太多的树木? ①政府正在努力阻止人们污染环境。 T he government is trying to ____ people ____ the environment. ②请不要让他们一直等在门外。 P lease don ’t ______ them ______ outside the door. 4. suppose 猜想; 假设后多加宾语从句(1) suppose + that 从句,表示“猜测;假定”。如: I suppose that you are right. 我想你是对的。 You can suppose that A equals B. 你可以假定 A 等于 B。(2) suppose + 名词/ 代词+ to be... ,表示“认为……是……”。 Many people suppose him to be over 50. 许多人认为他已经 50 多岁(3) suppose 用于祈使句中,表示“让……”。如: Suppose we go for a swim. (= Let's go for a swim.) 让我们去游泳吧。(4) suppose 引导条件状语从句,相当于 if 。如: Suppose that (= If) the new