人教版(新教材)高中英语选修1Unit5 Working the Land教学设计3：Discover useful structures.doc

人教版(新教材)高中英语选择性必修第一册 PAGE PAGE 1 Unit 5　Working the Land Discover useful structures 教学目标 知识目标：掌握主语从句。 能力目标：综合运用识别，理解，运用，评价，创造等思维技能完成有意义的语言表达，并能较灵活地运用主语从句。 教学重难点 教学重点：主语从句。 教学难点：学会利用所学习的单词，短语和重点语法来进行口语和书面表达。 教学过程 Pre-class 1. Greeting 2. Leading-in 学生活动： 1. 学生观察并分析活动 1中的句子，通过理解句子的结构和意义，画出主语，识别主语从句，并观察that引导的主语从句在句中的位置以及形式主语it的用法。 What Yuan Longping really cared about was not money or celebrity. That Yuan Longping had realised his dream of seawater rice surprised the whole world. It surprised the whole world that Yuan Longping had realised his dream of developing seawater rice. ?第一句是what 引导的主语从句，注意what在句中并非疑问词，而是连接代词。在该句中使用名词性从句，起到一定的强调作用。 ?第二句是 that引导的主语从句，注意that放在句首，所以不能省去，这使得句子成分明确。 ? 第三句是由it作形式主语，that引导的主语从句放在句末，这是该类型的主语从句更为常见的结构形式。 While-class 学生活动： 1. 学生重读文本“A Pioneer for All People”，找出文中带有主语从句的复合句。例如: ... what concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat. How this could be done was a challenging question at the time. ... whether it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate. …It is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan's hybrid strains. What impresses people most about Yuan Longping is his ongoing ability to fulfil his dreams. 2. 学生尝试不用主语从句，而用其他表述方式复述这些句子，体会主语从句在表达上的不同作用。 提示：主语从句的位置比较灵活，采用不同句式可以丰富自己的表达。需要注意的是不同句式的运用要遵循英语表达的一些重要原则，如“末端重量”原则，即重要的信息可放在句末。还需让自己的表达更容易理解，如当句末已有从句时，不宜再将主语从句放在句末。另外，即使同一个意思可以用不同的句式来表达，它们表达的意义也会有细微区别。 3. 学生先完成活动2的匹配练习，观察主语从句中的语序，然后翻译这五个句子，体会英汉两种语言的特点，并结合前面找到的句子整理出主语从句的引导词，弄清句子的主语是如何经由引导词引出的。 A. What worries many people remains an unanswered question. B. That the lifestyle is slower and healthier is an important topic for us to research. C. How we can find a suitable solution to produce sufficient food while keeping the environment safe is that these chemicals may even cause cancer. D. When these wheat farmers will join this pilot ex