英語人教版八年級下冊語法課.ppt

1、Unit 7 Whats the highest mountain in the world?,Section A 3 Grammar focus4c,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 the d

2、eepest 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.,大多數(shù)形容詞有三個級。 1. 原級: Structure : as . as. 像.一樣 e.g. Tim is as tall as Tom. 2. 比較級 (用于兩者之間的比較): Structure：形容詞比較級 than . e.g. This box is bigger than that one.,形容詞和副

3、詞的比較級和最高級,3. 最高級(用于三者或三者以上的比較): Structure: the + 形容詞的最高級of / in . e.g. Tom is the heaviest in our class. He is the most popular in our school.,規(guī)則變化 1) 一般情況下，單音節(jié)或雙音節(jié)的形容詞/副詞比較級er， 最高級est。如: clever cleverer cleverest few fewer fewest small smaller smallest 等。,形容詞、副詞的比較級和最高級 規(guī)則變化和不規(guī)則變化,2) 以e結(jié)尾的詞，比較級r，最高

4、級st 即可。 如： nice nicer nicest cute cuter cutest large larger largest 3) 以輔音字母y結(jié)尾的變y為ier或est 如: easy easier easiest happy happier happiest 再如：early, busy, heavy, dirty, lazy 也如此。,4) 重讀閉音節(jié)，單輔音結(jié)尾的，雙寫這個輔音字母er 或 est的詞： fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wett

5、er wettest big bigger biggest,5) 多音節(jié)和部分雙音節(jié)的詞需要在形容詞 原級前more 構(gòu)成比較級，the most 構(gòu) 成最高級。如： beautiful more beautiful the most beautiful 又如: delicious, popular, important, interesting, expensive, creative 雙音節(jié)的詞如: careful more careful the most careful useful more useful the most useful,少數(shù)單音節(jié)詞也是這樣，如： pleased m

6、ore pleased the most pleased tired more tired the most tired b) 不規(guī)則變化： good better best well better best bad worse worst many/much more most,far farther farthest (距離遠) far further furthest (程度深) old elder eldest (長幼) old older oldest (年齡),三者或三者以上相比，表示最高程度時，用“the + 最高級”的結(jié)構(gòu)表示。這種句式一般常有表示比較范圍的介詞短語。例如： Z

7、hang Hua is the tallest of the three. He works (the) hardest in his class.,最高級的用法,2. 最高級可被序數(shù)詞以及 much，by far，nearly，almost，by no means，not quite，not really，nothing like 等詞語所修飾。例如： This hat is by farmuchnearlyalmostnot nearlyby no meansnot quitenothing like the biggest. How much did the second most ex

8、pensive hat coat?,3. 表示“最高程度”的形容詞，如 excellent，extreme，perfect等，沒有最高級，也不能用比較級。 4. 形容詞最高級修飾作表語或介詞賓語的名詞、代詞時，被修飾的詞往往省略。 e.g. He is the tallest (boy) in his class. 5. 作狀語的副詞最高級前可以不加定冠詞。 e.g. Of all the boys he came (the) earliest.,比較級考點 比較級修飾問題a little, a bit, even, still, much, a lot, far 等可修飾比較級。 e.g.

9、Tom is a little taller than Jim. This book is much more interesting than that one.,中考鏈接, 同級比較 e.g. The weather in Beijing is colder than that in Xian. Our school is bigger than yours. the + 比較級 e.g. Lucy is the fatter of the two girls., “a/an + 比較級”表示“又一，再一” e.g. Lily has a doll, but she wantsa bigg

10、er one. 隱性比較（沒有than的情況） e.g. Who runs faster, Lucy or Lily? Youd better come earlier next time. He worked hard last term, but he works even harder this term., 越來越. 比較級 + and + 比較級 b. the + 比較級 + 句子，the + 比較級 + 句子 e.g. Its getting colder and colder. The more you exercise, the better you are.,2. 最高級考點

11、 說明：形容詞的最高級前必須加the；副詞的最高級前省略the。 范圍問題 e.g. Tom is the tallest student in the class. Spring is the best season of the year., “.之一”問題 e.g. Beijing is one of the biggest cities in the world. “the + 序數(shù)詞 + 最高級” e.g. I think he is the second tallest boy in his class.,3. 比較級和最高級的轉(zhuǎn)換 e.g. Tom is the tallest

12、student in the class. = 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.,總結(jié)： any other + 名詞單數(shù) the other + 名詞復(fù)數(shù) 否定 + 比較級 = 最高級 比較級 + 極限 = 最高級,同級比較 as + adj./adv. + as e.g. She is as thin as Lily. He w

13、rites as carefully as Linda. not + as/so + adj./adv. + as e.g. Tony didnt run so fast as Carter.,1. Our family has bought a car so we can travel _ than before.（2008陜西） 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陜西） the

14、 funniest B. funniest C. funnier D. the funnier,學(xué)以致用,D,A,3. The _ friends you have, the _ you will be.（2010陜西） A. more, happy B. many, happy C. more, happier D. many, happier 4. When he heard a cry for help, he ran out as _ as he could.（2011陜西） hardly B. quickly C. finally D. slowly,C,B,5. This plac

15、e is not big enough for Lucys birthday party. We should find a _ one.（2012陜西） big B. small C. bigger D. smaller,C,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 _ than the Yangtze

16、 River. 2. Qomolangma is 8,844.43 meters _. Its one of the most _ places for serious mountain climbers.,longest,longer,high,popular,4a,3. No ocean in the world is as _ as the Pacific Ocean. 4. Although Japan is _ than Canada, it is _ smaller.,big,older,much,太平洋,n. 大海；海洋,Write two comparisons about t

17、wo topics. Write true facts.,Two rivers: _ and _ _,e.g.,4b,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.,the Yangtze River,the Amazon River,Two cities: _ and _ 1. _. 2. _ .,Two animals: _ and _ 1.

18、_. 2. _ .,Write five questions using comparisons. Then ask your partner your questions.,Writing,1. _ 2. _ 3. _ 4. _ 5. _,e.g.,4c,What is the highest building in our city?,Exercises,1. She is _ than _. A. busier / us B. busier / we C. more busy / us D. more busy / we 2. Jane is _ than Betty. A. less taller B. less tallest C. less tall D. not as tall 3. China is _ country in the world. A. the third largest B. the largest third C. the third