课件99张PPT。cloning Language points 1. differ vi. 不一致, 不同, 相异, 不同意, 意见相左常见的搭配有： A and B differ in … A differs from B sb differ from/ with sb on/ about / over /upon sth 拓展 be different from 与…不同 make no difference to sb. make a difference 对…没有影响 起作用,产生影响现代飞机跟早期的在很多方面有所不同。Modern airplanes differ from early ones.对于如何解决问题, 我跟他的意见不一致。I differ with him on how to solve the problem.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 differ _____ that of the South.from/withon/about/upon / overinfrom/ with2. It is a way of making an exact copy of another animal and plant. exact adj.精确的, 准确的, 原样的, 精密的 What were his exact words? I don’t know the exact size of the room. exactly adv.正确地, 严密地,恰恰 That’s exactly what I expected. You’ve arrived at exactly the right moment. exactly speaking 3. It happens in plants when gardeners take …when twins identical in sex and … 1) “when gardeners take cuttings from growing plants to make new ones, …when twins identical in…是两个时间状语从句。 when引导的时间状语从句中从句的动作可以 与主句的动作同时发生, 也可以先于主句的 动作。 Don’t be afraid of asking for help _____ it is needed.???(03, 全国) A. unless??B. since????? C. although????D. whenD 2) happen vi. occur by chance; take place (偶然地)发生; 出现 happen to do/be … happen to sb. It happened that … happening n. 事件; (偶然发生,常用复数) 辨析: happen, occur, take place与come about happen 是一般用语, 词义较广, 强调事情 发生的偶然性; occur 用法较正式, 既可以指自然发生, 也 可以指有意安排。碰巧(某人)发生什么事了碰巧1) When did the explosion _____? 2) Important elections _____ this fall. 3) The concert will _____ next Sunday. 4) How did the quarrel _____?occurtake placecome abouthappenUse the above words to fill the blanks.take place 一般指有计划, 按事先安排的 进行的含义。 come about 往往注重事情发生的原因, 常 与how 连用。 以上四组词均为不及物动词, 无被动语态。4. undertake vt. (undertook; undertaken) 着手做, 从事, 进行; 担任, 承担, 答应, 同意。 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。 I can undertake the responsibility for the changes. 我愿意承担这些变革的责任。完成下列句子。 1) The lawyer _____ a new case. 那个律师接了一个新的案子。 2) He will _____ ___ _____ next month (去旅行). 3) He _____ ___ _____ _____. (承担一项新任务)undertookundertook a new taskundertake a journey5. pay off (事业、计划等) 成功; 付清薪水并 解雇; 偿还(债务等)。 At last the determination and patience of scientists paid off ….. 最终科学家们的决心和耐心得到了回报…. He paid off the crew of the ship. 他付清全体船员的工资并将他们解雇。 In the end he paid off all his debts. 最终他还清了所有的债务。 pay back 报答; 报复 contain v. 包含, 含有 2) needed to produce a new sheep 为过 ... ...
~~ 您好，已阅读到文档的结尾了 ~~
