人教版高中英语选修八课件： Unit2 Cloning.ppt

英语学习辅导报 出品 * 英语学习辅导报 出品 * 英语学习辅导报 出品 * 英语学习辅导报 出品 * 英语学习辅导报 出品 * differ –different –difference commercial –commerce disturbing –disturbed –disturb—disturbance medium –media (pl.) forbid –allow /permit (opposite word) accumulate --accumulation assumption –assume (v.) regulation –regular(adj.) –regularly resist –resistance(n.) –resistant(adj.) decoration --decorate 1.differ是不及物动词, 主要有两个义项：“不同, 相异；不同意, 意见相左”。 常见的搭配有： 1). sb. differ from/with sb. on/about sth.; 2). sth. and sth. differ in… ; 3). sth. differ from sth . 拓展: different adj.差异, 差别, 分歧, 争论, 差额 difference n. be different from _与…不同 make no difference to sb_与…不同 make a difference to sb _起作用,产生影响______ 即时练习：用介词 from, with, on, about, upon 或 in 填空。 (1) We differ _________ him _________ that question. (2) The two nations differ ______ culture and religion. (3) The climate here differs ___________ that of the South. with about in from 2. undertake vt.实施，从事，着手做，承担, 担任, 许诺, 保证，采取,答应 The procedure is difficult to undertake, of course. 当然, 这个过程很难实施 The scientist undertakes the experiment 科学家从事这项实验。 undertake sth 承担某事 undertake a task/ project 承担一个任务/项目 undertake to do sth 许诺做某事/ 同意做某事 undertake that … 保证… 即时练习：完成下列句子。 He will _____ ____ ________ next month (去旅行). He _________ __________ ___________ (承担了一项新任务). 我愿意承接这项变革的责任。 I can _______ ________ __________ for the changes. 他许诺当我们的向导. He _________ _________ _________our guide . undertake the responsibility undertook to be undertook a new task undertake a journey 3.But at last the determination and patience of the scientists paid off in 1996 with a breakthrough. pay off （事业、计划）成功 1)他付清全体船员的工资并将他们解雇。 He paid off the crew of the ship. 2)最终他还清了所有的债务。 In the end he paid off all his debts. pay off 有三义项：成功；付清薪水并解雇；偿还（债务等）。 4.Cloning scientists were cast down to find that Dolly’s illnesses …… cast down ：discourge 使沮丧 be cast down:feel discourged 灰心，沮丧 词汇cast about/aro