2014成都教师资格证 高中英语试讲教案2 Module 2 grammar link words.doc

Developing and developed countriesI. Content Module 2 Grammar link wordsII. Teaching aimsA. Knowledge objectives: to understand the usage of link words conjunction.B. Ability objectives: By the end of this class, Ss can use link words to talk skillfully and write correct compound sentence.C. Emotion objective: Get Ss to become interested in grammar learning.III. Important points and difficult pointsA. Important points: the usage of but, however, while.B. Difficult points: the distinction of but and however.IV. Class type: new class.V. Teaching method: task-based teachingVI. Teaching aids: PPT, blackboard designVII. Teaching procedures Step 1 Greeting and lead-inStep 2 Presentation Look at the link words but and however in these sentences. Then answer the questions.1) The report shows that we are making progress but that we need to make greater efforts.2) In the last ten years inChina, 150 million people moved out of poverty. However, the challenges are still great.3) More than 1 billion people in developing countries do not drink safe water. However, in other parts of the world, e.g.Eastern Europe, water is now mostly safe to drink.Q1. Does however mean the same as but?YesQ2. Which link word begins a sentence?HoweverQ3. Which link word can join two parts of a sentence?ButQ4. Which link word is followed by a comma?HoweverStep 3 Explanation A. but and howeverbut 作为并列连词，在意义上起转折作用。 but 前后的两个句子或短语在意义上形成鲜明对照。 but 用来连接两个分句或两个较长的短语时， but 前面一般要加逗号。(1) He is old but strong. (2)Learning the guitar isnt difficult, but you will have to practice.however 意为“可是，然而，尽管”，较 but 的意味弱，通常用作连接性状语。其位置可以在句首，句末或插入句中。however不能直接连接两个分句，必须另起新句，并用逗号隔开。(3) However，we need not do that now. (4)He said it was so；he was mistaken，however. 他说是那样的，然而他却弄错了。(5) His friends，however，had other ideas. 然而他的朋友们却另有见解。注： however 也可用作连接副词，意为“不论怎样”，用来引导让步状语从句。例如：However we may do it，it will be a difficult job. 无论雪下得多大，我们都必须回去。b. although and while While表示两个事实之间的转折对比，although可以用but改写成另一种句子while 用作连词时，连接两个并列句子，表示“对比”关系。例如：He went out for a walk， while I stayed at home.（他出去散步了，而我却呆在家里。）I like singing while she likes dancing.（我喜欢唱歌，而她喜欢跳舞。）although引导的从句放在主句前后均可，有时还可放在句中。Although many difficulties are still ahead, we are determined to make greater achievements.He often helps me with my English although he is quite busy.although引导的从句不能与but, however连用，但可与yet, still连用。不能说：Although he was old, but he worked hard. 应把but去掉。当然，保留but而去Although也可。c. Conclusion1，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往往置于句首，无需用标点符号与句子隔开。2，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。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。Step 4 Practice 用but, however, although , while填空1. Id like to go with you， _however_， my hands are full.2. Im sorry， _but_ I wont be able to come tonight.3. My brother decided to go to that dangerous place, _although_ I asked him not to.4. The boy had said he wouldnt do it again, _but_ he failed.5. 1. I can not speak Russian _while