二次函数数学

Unit 3 The meaning of colour 课 题 M9U3 课时 9-1 主备人 授 课 时 间 教 学 目 标 1. Enable the Ss to read the new words and expressions freely and correctly. 2. Get the Ss to master the uses of some important words and expressions. 教学重、难点 The pronunciation of all the new words. How to make people master the uses of some words. 教、 学 具 A projector and some slides, a blackboard. 预 习 要 求 Try reading the new words and expressions. 教师活动内容、方式 学生活动内容、方式 旁 注 Step1: Greeting Step2: Pronunciation Ask a few Ss to read the new words and expressions before the whole class. At the same time, the teacher makes others find their mistakes and try to correct them. Then teaches the Ss to read the new words. Step3: Explanation Choose some important words and expressions to explain to the Ss. 1. thread n线，纱；纤维 线索；脉络；思路 a thread of water细细的一条流水 pass a thread through the eye of a needle把线穿过针眼 to lose the thread of one's argument 论点有失条理 vt纫针，把线穿过（针孔）thread a film把胶片装入放映机 thread one's way through穿过（街道、人群、森林等） 2. conclusion n.结束, 缔结, 结论 arrive at a conclusion得出结论， 告一段落 come to a conclusion得出结论， 告一段落 draw a conclusion得出结论， 告一段落 reach a conclusion得出结论， 告一段落 at the conclusion of当...完结时 bring to a conclusion使结束； 谈定（买卖等） come to the conclusion that...所得结论是..., 断定 draw the conclusion得出结论， 推断 in conclusion最后， 总之 Leap/ jump to a conclusion冒然断定， 过早下结论 try conclusions with和...决最后胜负， 争（最后）优劣； 试验， 验证 3. justice n公平；合理；公正a sense of justice正义感 treat sb. [sth.] with justice秉公对待某人[某事] bring sb. to justice使某人受到法律制裁 do justice to公平对待, 说句公道话in justice to公道地对待 Justice has long arms. [谚]天网恢恢, 疏而不漏。 4. principle n.法则, 原则, 原理 on principle按照原则（或道德标准）；根据原则（或道德标准） against one's principle违反自己的原则on the principle of根据...原则 by principle按照原则, 根据原则of principle有原则的 5. rid vt rid 或 ridded, rid, ridding （与of 连用）摆脱；除去 to rid the town of rats 消灭城里的老鼠rid oneself of debt还清债务 get [be] rid of摆脱; 除掉, 拨除(眼中钉) He is rid of fever. 他的烧退了。 6. elect vt（常与to 连用）选举，推选 作出选择；决定He elected to become a doctor. 他决定当医生。 adj当选而尚未就任的 7. substitute n. 代替者[物], 代用品 use plastics as a substitute for steel用塑料做钢的代用品 vt.以[用]...代替(for);【化】取代 substitute A for B用A代B substitute sb. by [with] another用别人接替某人 vi.作代替者; 代替;【化】取代 substitute for a teacher代替一位教师 He substituted as the typist in the office. 他代替做这个办公室的打字员。 adj.作为代用品的; 使用代用品的substitute material代用材 8. oppose vt反对； 反抗；对抗 Many members of the council opposed the building of the luxury houses in the centre of the city. 许多市议会议员反对在市中心建造豪华型住宅。 （与to连用）使反对，使相对 Many residents are opposed to the plan of buildi ... ...