1、Unit 7Whats the highest mountain in the world?,Section A Grammar Focus,Grammar Focus,4a. Fill in the blanks with the correct forms of the words in the box.,1. The Amazon River is one of the _ rivers in the world. Its a little _ than the Yangtze River.2. Qomolangma is 8,844.43 meters_.,big much popul
2、ar long old high,longest,longer,high,Its one of the most_ places for serious mountain climbers.3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is_smaller.,popular,big,older,much,一 写出下列单词的比较级和最高级,1. good2. comfortable3. big4. happy5. cheap6. many7. difficu
3、lt8. little,1. good 2. comfortable 3. big 4. happy 5. cheap 6. many 7. difficult 8. little,better best,more most ,bigger biggest,happier happiest,cheaper cheapest,more most,more most ,less least,1. Lily gets up _ (early) than Lucy. 2. Which goes _ (slowly), Tom or Jim? 3.This book is _ (interesting)
4、 than that one.,earlier,more slowly,more interesting,二 根据所给词的适当形式填空,4. She works _ (careful) in her school. 5. Who goes to bed _ (late) Jim, Tom or Jack? 6. I think turkey is _ (delicious) of all.,the most carefully,latest,the most delicious,e.g. Two rivers：_ and _,4b. Write two comparisons about tw
5、o topics. Write true facts.,the Yangtze River,the Amazon River,The Yangtze River is almost as long as the Amazon River.,The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.,Two cities：_ and _1._2._ _,Two animals：_ and _1._ 2._ _,Pair work,4c. Write five questions usi
6、ng comparisons. Then ask your partner your questions.,_,What is the highest building in our city?,Who is the oldest people in our city?,What is the most popular street in our city?,What is the most delicious food in our city?,Where is the busiest road in our city?,大多数形容词和副词有三个等级：原级、比较级、最高级。一、形容词比较级的
7、构成 1.构成的不规则变化: 2.构成的规则变化:,形容词和副词的比较级,2. 构成的规则变化:1) 单音节词和少数双音节词一般在词尾 后加-er 构成比较级 或-est构成最高级. 如： 原级 比较级 最高级 cold colder coldest bright brighterbrightest young younger youngest,2) 以字母 e 结尾的词只加 r 或-st 构成 比较级和最高级。 原级 比较级 最高级 nice nicer nicest fine finer finest large larger largest,3) 重读闭音节词末尾只有一个辅音字母时, 先
8、双写这个辅音字母, 再加-er或-est。如: big bigger biggest thin thinner thinnest 4) 以“辅音字母+ y”结尾的双音节词， 先改y为i, 再加-er或-est。如： easy easier easiest happy happier happiest,5) 多音节词和部分双音节词在词前加more 或most。如： delicious more delicious most delicious interesting more interesting most interesting importantmore important most im
9、portant,carefully-more carefully-most carefullyquickly-more quickly -most quicklyslowly-more slowly -most slowlyeasily- more easily -most easily,用法：英语中三者或三者以上相比较，表示“最” 这样的最高程度概念时，要用 “the+最高级” 的结构表示。这种句式一般带有表示比较的介词短语，比如: in our class, of the three 等。例如：Wang Lin is the tallest in our class. This theat
10、er is the cheapest of the three.注意使用最高级时应注意以下几点：,形容词的最高级,(1) 表示 “最之一” 的句式，要用 one of the +形容词最高级+复数名词。例如: Jingjiang Hotel is one of the biggest hotels in our city. Lisa is not one of my best friends. (2) 当最高级前面有物主代词或名词所有格时， 不加定冠词 the。例如：Tom is Lucys best friend. Tuesday is her busiest day.,(3) 最高级前可加
11、序数词。例如：The Yellow River is the second longest river in China.(4) 形容最高级修饰作表语或介词宾语的名词，代词时，被修饰的词往往省略。例如：He is the laziest (student) in our class.,2. 形容词比较级和最高级的构成 规则变化一般情况下，单音节或双音节的形容词比较级直接加-er, 最高级直接加-est。如： clevercleverercleverest cheapcheapercheapest fewfewerfewest smallsmallersmallest youngyoungery
12、oungest,b. 以-e 结尾的形容词，比较级+ -r,最高级+ -st。如： largelargerlargest nicenicernicest cutecutercutestc. 以辅音字母+y结尾的形容词，变y为i +er或+est。 busybusierbusiest heavyheavierheaviest easyeasiereasiest happyhappierhappiest dirtydirtierdirtiest,d. 以重读闭音节结尾，末尾只有一个辅音字母结 尾的词，双写最后一个辅音字母，再加+er或 +est。 如： bigbiggerbiggest thint
13、hinnerthinnest fatfatterfattest hothotterhotteste. 多音节和部分双音节形容词，需在原级前+more 构成比较级，+ most 构成最高级。如： importantmore importantmost important beautifulmore beautiful most beautiful difficultmore difficultmost difficult,3. 不规则变化：,最高级规则变化口诀：,最高级，很容易，一般词尾加est。(cheap-the cheapest)词尾若有哑音e, 直接就加st。(close-the clo
14、sest)重读闭音节, 单辅音字母要双写。(big-the biggest)辅音字母加y, 记得把y变为i。(friendly-the friendliest) 多音节，考考你，the most到底加哪里？(popular-the most popular),1.We are going to the Green Restaurant for lunch. (就划线部分提问) _ you going for lunch? 2. Sam is the shortest in his class. (改为同义句)Sam is _ than _ _ student in his class.Sam
15、is _ than _ _ students in his class.Sam is _ than_ _ in his class.3. How do you like Screen City? (改为同义句) _ do you _ Screen City?,Where are,shorter,any other,What,think of,shorter,the other,anyone else,shorter,练习：改写句子,1.表示两者之间的选择, 可用“Which/Who + 比较，or?”.,2.表示两者之间的比较，通常用连词 than 引导， 表示“更一些”,3.much/far
16、/a lot, even ,still ,a little/a bit 修饰比较级,表示程度.,Who runs faster, he or she?,He runs faster than she.,He runs much faster than she.,4. “比较级+and+比较级”表示“越来越”,5. “the+比较级 , the + 比较级”表示“ 越, 越 ”,6. 表示不及另一方时，用“less+原级+than” (双音节和多音节词),He becomes healthier and healthier.,The more you exercise, the healthier you will be.,She is less healthy than he.,He is healthier than she.,Shanghai is becoming more and more modern.,1.比较级 + and +比较级 越来越2.the+比较级 , the + 比较级 越, 越 ,3._you are, _mistakes you will make. (你越仔细，做错的题目就越少） 4. _
