Book3 Module 2 Developing and Developed Countries GrammarClass _ Group _ Name _ _Code（代号） Evaluation（评价）【使用说明与学法指导】1同学们在自习或自主时间通过阅读知识链接，用30分钟把预习、探究案完成。A、B层的同学用30分钟把预习、探究、训练案中的所有知识完成，带的题目C层同学可不做。 2重点预习重点单词和短语的用法。3把有疑问的题做好标记或写到后面的“我的疑问处”。【学习目标】掌握连词（Link words）: but, however, although 和while的用法【学习重点难点】however, although 和while的用法【学习策略指导】让学生自主学习，小组合作探究解决当堂所学主要内容中存在的问题【预习自学】连词（Link words）: but, however, although 和while的用法【教学环节设计】【预习探究案】Step 1自主学习语法：连词（Link words）: but, however, although 和while的用法，标出你认为的重点和疑难部分but与 however,相同点：都表示转折，都可以连接两个句子不同点: but还可连接两个并列的成分，however不能；however可置于句首，句中，句末，而且在句中时前后用分号或逗号隔开的情形较多。but往往置于分句句首，无需用标点符号与句子隔开。练习：用but 和however填空 。The watch is old _ it is in good condition.The watch is old, _, it is in good condition._The watch is old; it is in good condition.The watch is old; it is in good condition, _.【拓展】： but1) but 还可用作副词，表示“不过，仅仅”= onlyHe is but a boy. 他不过是个孩子。He left but an hour ago. 他不过一小时前才离去。2) but 还可用作介词，表示“除.之外”We can do nothing but wait. = We have no choice but to wait.除了等待我们别无选择。however 作副词 ，表示“无论如何，不管怎样”He can answer the question however （=no matter how) hard it is.You should try to get a good nights sleep _ much work you have to do.A. however B. whenever C. whatever D. whoever although与 while相同点：都是连词，都可引导让步状语从句；不同点：although意为“虽然，尽管”，相当于though，所引导的句子通常置于句首。含although从句的复合句可以转化为由but引导的并列句，但although与but不能同时出现； while意为“然而，但是”，可用作并列连词，表示前后的对比，一般不与but转换，所引导的句子不能置于句首。注意：although引导的从句不能与but, however连用，但可与yet, still连用。He is a doctor, while I am a teacher._Norway is at the top of the list, while the United States is at number 7. _Although they are poor, they are happy. _Although it was so cold, he went out without an overcoat. _Although /Though Norway has a small population, it is at the top of the Human Development Index._Even though I didnt understand a word, I kept smiling._【拓展】though adv.可是, 然而, 不过;通常置于句末，用逗号隔开。 Its hard work, I enjoy it, though.这是件艰难的工作, 可是我还是喜欢它。Ive a bit of headache. Its nothing much, though.我有一点头痛, 不过并不厉害。though用在倒装句中Young though he is, he is quite experienced.while 1) 表示时间，“当.时候，和.同时”Strike while iron is hot.趁热打铁。2) 表示让步， “虽然，尽管(=although)”While/Although we dont agree on the matter, we continue to be friends.Step 2小组合作讨论解决疑难问题【检测反馈】I. 用however, but, while, although或though完成句子1. I feel a bit tired. _, I can hold on(坚持).2. It is hot in summer here, _ it is not cold in winter.3. Cotton is soft _ metal is hard.4. She looks very young, _ she is already 30 years old.5. I like tea _ she likes coffee.6. He always goes swimming, _ cold it is.7. He said he would come, he didnt, _.8._ we spared no effort, we lost the game.小结本节课重点：我的疑问处：（至少提出一个有价值的问题）_今天我学会了什麽？ _学科网（北京）股份有限公司