Period 4: Grammar学习目标：1. 理解并能够运用连词(but, however，although and while)2. 了解不同连词的含义3. 利用例句归纳出语法规则学习重点：理解并能够运用连词(but, however，although and while)学习难点：利用例句归纳出语法规则课前预习使用说明与学法指导：1. 利用例句归纳出语法规则2. 15 分钟之内完成预习自测：观察下列从 Reading and Vocabulary 中选取的句子，体会连词 but，however，although 以及 while 的用法。①Norway is at the top of the list，while the US is at number 7.②The UK is in the thirteenth position，while China is in the middle of the list.③However，the challenges are still great.Every day 799 million people in developing countries are hungry.④Although more than 80% of children in developing countries go to primary school，about 115 million children are not being educated.⑤However，in other regions of the world，e.g. Eastern Europe，water is now mostly safe to drink.⑥The report shows that we are making some progress but that we need to make greater efforts.⑦Although developed countries give some financial help，they need to give much more.[自我总结]连接词是连接单词、短语、从句或句子的一种 ，在句中 作任何成分，但大多数连接词都有具体的 和 。我的疑问：__________________________________________________________________________________________________________________________________________课内探究质疑探究：用法例句but连接两个句子或短语在意义上必须完全相反。They rushed to the hospital but they were too late.他们急忙赶到医院，但是已经太迟了。1however指不管前面所说的如何，总以后面的为正确，含有不可置疑的含义。可用于句首、句中或句末。用逗号与其他部分分开。He worked very hard. However，he failed.他工作很努力，然而失败了。You have not told us your opinion.You can，however，make it clear now.你还没有告诉我们你的意见，但是现在你可以明白告诉我们。The composition is all right，there is room for improvement，however.这...
