1、 1 Unit 7 What s the highest mountain in the world Section A 3（ Grammar focus-4c） Grammar focus Whats the highest mountain in the world? Qomolangma. How high is Qomolangma? Its 8,844.43 meters high. Its higher than any other mountain. Which is the deepest salt lake in the world? The Caspian Sea is t
2、he deepest of all the salt lakes. Did you know that China is one of the oldest countries in the world? Yes, I did. Its much older than the US. Step 1 Grammar 形容词和副词比较级和最高级变化规则 1. 规则变化 1) 一般情况下，单音节或双 音节的形容词（或副词）比较级 er ， 最高级 est 如： clever cleverer cleverest few fewer fewest small smaller smallest等。 2)
3、 以 e结尾的词，比较级 r，最高级 st 即可。 如： nice nicer nicest cute cuter cutest large larger largest 3) 以辅音字母 y结尾的变 y为 i er或 est。 如 : easy easier easiest happy happier happiest 再如： early, busy, heavy, dirty, lazy也如此。 少数单音节词也是这样，如： pleased more pleased the most pleased tired more tired the most tired 2. 不规则变化： good
4、 better best well better best bad worse worst many / much more most far farther farthest (距离远 ) far further furthest (程度深 ) old elder eldest (长幼 ) old older oldest (年龄 ) Step 2 中考链接 1. 比较级考点 比较级修饰问题 a little, a bit, even, still, much, a lot, far 等可修饰比较级。 e.g. Tom is a little taller than Jim. This bo
5、ok is much more interesting than that one. 同级比较 e.g. The weather in Beijing is colder than that in Xian. 2 Our school is bigger than yours. the + 比较级 e.g. Lucy is the fatter of the two girls. “a/an + 比较级 ” 表示 “ 又一，再一 ” e.g. Lily has a doll, but she wants a bigger one. 隐性比较（没有 than的情况） e.g. Who runs
6、faster, Lucy or Lily? Youd better come earlier next time. He worked hard last term, but he works even harder this term. 越来越 . a. 比较级 + and + 比较级 b. the + 比较级 + 句子， the + 比较级 + 句子 a. e.g. Its getting colder and colder. The more you exercise, the better you are. 2. 最高级考点 说明：形容词的最高级前必须加 the; 副词的最高级前省略
7、the。 范围问题 e.g. Tom is the tallest student in the class. Spring is the best season of the year. “. .之一 ” 问题 e.g. Beijing is one of the biggest cities in the world. “the + 序数词 + 最高级 ” e.g. I think he is the second tallest boy in his class. 3. 比较级和最高级的转换 e.g. Tom is the tallest student in the class. =
8、Tom is taller than any other student in the class. = Tom is taller than all the other students in the class. = No other students are taller than Tom. 2. 同级比较 as + adj./adv. + as e.g. She is as thin as Lily. He writes as carefully as Linda. not + as/so + adj./adv. + as e.g. Tony didnt run so fast as
9、Carter 学以致用 1. Our family has bought a car so we can travel _ than before.（ 2008陕西 ） A. most easily B. less easily C. easily D. more easily 2. My father told me a story last night. It is _ one Ive ever heard. （ 2009陕西） A. the funniest B. funniest C. funnier D. the funnier 3. The _ friends you have,
10、the _ you will be.（ 2010陕西） A. more, happy B. many, happy 3 C. more, happier D. many, happier 4. When he heard a cry for help, he ran out as _ as he could.（ 2011陕西） A. hardly B. quickly C. finally D. slowly 5. This place is not big enough for Lucys birthday party. We should find a _ one.（ 2012陕西） A.
11、 big B. small C. bigger D. smaller Step3 Writing Write five questions using comparisons. Then ask your partner your questions Step 4 Fill in the blanks with the correct forms of the words in the box. big much popular long old high 1. The Amazon River is one of the _ rivers in the world. Its a little
12、 _ than the Yangtze River. 2. Qomolangma is 8,844.43 meters _. 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. Step 5 Write two comparisons about two topics. Write true facts. e.g.
13、 Two rivers: the Yangtze River and the Amazon River The Yangtze River is almost as long as the Amazon River. The Amazon is longer than the Yangtze, but the Yangtze River is the longest river in China. Two cities: _ and _ 1. _. 2. _. Two animals: _ and _ 1. _. 2. _. Step5 Homework 1. To memorize the important phrases and sentences. 2. To make some sentences using as ? as, . times ? than, less than, more than
