1、Unit 3 Language in use 课时学案学习目标：1.Key vocabulary 重点词汇和短语diet, lead a life, disease2.Grammar point: 语法点The usage of the positive degree, the comparative degree and the superlative degree of adjectives and adverbs.学习重难点：正确应用比较等级学习过程：导 学 案 设 计 达成情况1、自主学习Language points:1. People also work harder and le
2、ad a busier life.人们仍然工作更努力并过着更忙碌的生活。lead a life 相当于 live a life 意为“过（某种生活） ”。 例如：我们在学校过着幸福的生活。We are _ _ _ _ at school.2. People put their rubbish outside in the street. As a result, there were many diseases.人们把垃圾扔在大街上。结果。产生了许多疾病。as a result 因此，结果as a result of 因为由于，作为的结果; =because ofHe didnt work h
3、ard. _ ,he failed in the exam.他不努力学习，结果没有通过考试。He passed the exam _ working hard.他努力学习，因此通过了考试。3. by the time 到的时候，相当于 whenBy the time I got home, my parents had fallen asleep.我到家时，我父母已经入睡了。二、合作探究形容词和副词的比较级和最高级的构成规则(1)单音节和少数双单节形容词、副词原级 比较级 最高级 构成方法great fastgreater fastergreatest fastest一般的单音节及少数双音节词
4、，在词尾加上er 或estbrave simplebraver simplerbravest simplest 词尾是不发音的 e 时，只加r 或sthot big hotter bigger hottest biggest重读闭音节词尾是一个辅音字母，需重复辅音字母，再加er 或esteasy earlyeasier earliereasiest earliest词尾是辅音加 y，先把 y 改为 i，再加er 或est(2)多数多音节形容词、副词，前面加 more 或 most原级 比较级 最高级carefully more carefully most carefullyimportant
5、 more important most important(3)少数形容词、副词的不规则变化原级 比较级 最高级good/well/ better bestbad/badly/ill worse worstmany/much more mostlittle less leastfar farther/further farthest /furthestold Older/ elder oldest/ eldest比较等级的运用(1)同级比较的句式同级比较一般采用 asas, 意为“和一样 .否定句中用 not as(so) as意为“不如 . 注意：asas 中间必须用形容词或副词的原级形式
6、。例：Mary dances as well as Kate. not as(so) as可以和比较级进行同义句转换。Lily didnt write as/so carefully as Lucy.=Lucy writes more carefully than Lily.=Lily writes less carefully/more carelessly than Lucy.(2)倍数比较级的几种句式 A+ is +倍数(twice/three times)+ as +形容词原级(big, high)+as +B例:Asia is four times as large as Europ
7、e.亚洲的面积是欧洲的四倍大。 A+ is +倍数+the size(height，length，width)+of +B例:The new hospital is five times the size of the old one. 这座新医院是这座旧医院的五倍大。 A +is+倍数+形容词比较级+than+ B例:Your school is twice bigger than ours.你们学校比我们学校大两倍。（3）形容词、副词的比较级运用用于两者之间进行比较，其句型结构一般为：A + 谓语+ 形容词比较级+ than + B。意思为“A 比 B 更” 。This tree is t
8、aller than that one. 这棵树比那棵树高。 运用时应注意：在含有连词 than 的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。 The weather in Shanghai is hotter than that in Beijing.在比较级前面可用 much，a bit, a little, rather, far, a lot, any, still, even 等修饰。而 very，quite，so，fairly，too 一般只能修饰原级，不能修饰比较级。如：A watermelon is much bigger than an apple.It
9、rained very heavily last night.“比较级+ and +比较级”或“more and more +原级”表示“越来越”It becomes warmer and warmer when spring comes. The rain became more and more heavily. Our school is becoming more and more beautiful.“the +比较级, the+比较级” ，表示“越越” 。The more exercise you do, the healthier you are. The higher you
10、stand, the farther youll see. The sooner，the better. 越快越好。在含有 or 的选择疑问句中，如果有两者供选择，前面的形容词或副词要用比较级形式。如：Which book is more interesting, this one or that one?Who runs faster, Tim or Tom? the+比较级 +of the two，表示“两者中较的” 。Li lei is the taller of the two boys.比较级+ than any other + 单数名词 / than the other + 复数名
11、词，意为“比任何其它都” ，含有“最”之意，表示同一范围内进行比较 (可与最高级进行同义句转换) ；比较级 + than + any + 单数名词，意为“比任何都” ，表示不同范围内的比较。The Yangtze River is longer than any other river/the other rivers in China.= The Yangtze River is the longest river in China.Shanghai is larger than any city in Japan.（4）形容词或副词的最高级的用法用于三者及三者以上的人或事物进行比较，其句型
12、结构一般为：A + 谓语+ the+最高级 + 表示范围的短语。I think Chinese is the most important of all subjects.English is the most widely used of all the languages in the world.运用时应注意：“one of + the +最高级+名词复数”表示“最的之一” 。She is one of the best students in her class.“the + 序数词+最高级+名词单数”表示“第最的” 。The Yellow River is the second lo
13、ngest river in China.形容词最高级前应加定冠词 the,副词的最高级前可以省略 the。但作表语的形容词最高级前，如果不是和其他人/物相比，或形容词最高级前有物主代词时，常不加 the。We are busiest on Monday.Wang Hai is my best friend.在含有 or 的选择疑问句中，如果有三者供选择，前面的形容词或副词要用最高级形式。Who runs (the)fastest, Jim, Tim or Tom?“ the+ 最高级+名词+定语从句” ，表示先行词被定语从句修饰时，其中的形容词常用最高级。This is the best f
14、ilm I have even seen最高级形式有时并不表示最高级概念，它只表示“在很大程度上，非常” ，这时最高级形容词或副词前不加 the。Its a most important question. 这是个非常重要的问题。三、课堂检测I. 单项选择1. The people in China _ a happy life nowadays.A. have B. take C. lead D. lives2. I was _ read a newspaper article about life in the university.A. interesting to B. interes
15、ted to C. interesting in D. interested in3. Half of the books_ lost yesterday.A. was B. were C. get D. have been4. He cant go to work any more because of his heart _.A. illness B. sick C. ill D. disease5. Could you help me_ when the plane will take off?A. look out B. get out C. find out D. take outI
16、I. 根据要求，完成句子。1. The school is very beautiful. We studied in the school. (合并成一句)The school _ _ _ is very beautiful.2. Do you know the boy sitting by the river? (改为复合句）Do you know the boy _ _ _ by the river?3. Have you_ _(听说) the decision?4. Please take more outdoor activities. You shouldnt just study
17、 indoors. (合并成一句)Please take more outdoor activities_ _ just studying indoors. 5. He had to care for his younger brother at home. (同义句)He had to _ _ _ his younger brother at home.III.任务型阅读Co-operation (合作) is always needed when you make a project that the teacher gives you. First, discuss all you wo
18、uld like to do with your classmates. Choose one of the members to write down what youre talking about. Then, with the ideas you get, list all you want. Everyone shares the duty for the project. You can collect information not only form books but also on the Internet. Making a survey(调查) and doing a
19、research are also good ways. After that, all the members put what has been found together. Try to make the project more well-organized. In the end, you can give a report in front of your class to show the results of your hard work.任务一：根据英文释义及首字母提示，拼写单词1. i_ plan; opinion2. s_ use, pay or have something with others任务二：同义句转换，每空一词You can collect information not only books but also on the Internet.You can collect information 3._ books 4._ on the Internet.任务三：根据短文内容，简答问题What can you give in front of your class to show the results of your hard work? 5._.四、知识视窗形容词副词x学后反思
