八年級英語上冊Unit3ComputersGrammar新版牛津深圳版

1、Period 3 Period 3 Grammar Module 2 Science and technology Oxford English Unit 3 Computers Will computers make our lives better? Revision and introduction Revision and introduction Complete the article. The first computers were _ than cars, but now they are becoming _ and _. Computers can calculate a

2、t a _ speed than we can. Computers are not _ than human beings, but they may be able to do a _ job than us. In the past, computers were _ expensive, but now they are much _. cheaper cleverer faster smaller bigger more Grammar A The comparative Grammar A The comparative of adjectives of adjectives Wh

3、en we compare two people or things, we can use the comparative of adjectives. better better How do we form the comparative of adjectives? -er more than The first computers were _ than cars, but now they are becoming _ and _. Computers can calculate at a _ speed than we can. Computers are not _ than

4、human beings, but they may be able to do a _ job than us. In the past, computers were _ expensive, but now they are much _. cheaper cleverer faster smaller bigger more better better The small dog runs fast. The horse runs _ than the small dog. fast faster fastest The leopard runs _. faster the faste

5、st The cow is _ than the sheep. The elephant is _ of all. heavy heavier heaviest The sheep is heavy. heavier the heaviest Jim is strong. Li Lei is . Tom is . strong er the strong est The blue car is nice. The red car is the blue car.( 紅車比藍(lán)車好看） The colourful car is of al （彩色車最好看） nicer than the nices

6、t How do you like these Christmas trees? 1 2 3 The first Christmas tree is beautiful. The second one is _than the first one. The third one is _of the three. more beautiful the most beautiful ￥ 500.00 ￥ 1000.00 ￥ 1500.00 The green bag is expensive. The white one is _ _ than the green one. The purple

7、bag is _one of all the bags. more expensive the most expensive 形容詞和副詞比較級和最高級的形容詞和副詞比較級和最高級的規(guī)則變化規(guī)則變化： 形容詞或副詞 原級 比較級 the +最高級 tall tall er the tall est nice nice r the nice st early earlier the earliest 規(guī)則變化 一般在詞尾 加-er 或-est short er the short est 以字母e結(jié)尾的 單詞后加-r 或-st fine r the fine st heavier the hea

8、viest 以“輔音字母+y” 變y為i,再加-er 或-est short fine heavy bigger big thin hot the thin nest thin ner the biggest hotter the hottest 以輔+元+輔結(jié) 尾的，雙寫尾 字母，再加- er/ -est 長的形容詞 多音節(jié)或少數(shù) 雙音節(jié)形容詞， 在詞前more/ most expensive beautiful useful the most expensive the most beautiful the most useful more expensive more beautiful

9、 more useful 1. large _ _ 2. nice _ _ 3. dry _ _ 4. thin _ _ 5.clever_ _ 6. happy_ _ 7. heavy_ _ 8.fat _ _ 9.politely_ _10. early _ _ 11. beautiful _ _ 12. quickly _ _ 13. interesting_ _ 14. excited _ _ larger the largest nicer the nicest drier the driest thinner the thinnest cleverer the cleverest

10、happier the happiest heavier the heaviest fatter the fattest more the most more beautiful the most beautiful 寫出比較級和最高級 more quickly the most quickly more interesting the most interesting more excited the most excited earlier the earilest 1. 這個(gè)箱子比那個(gè)箱子重。 This box is _ that one. 2. 你的電腦比我的大。 Your compu

11、ter is _mine. heavier than bigger than 3. 長江比黃河長。 The Yangtze River is _ _ the Yellow River. longer than 4. 這個(gè)故事沒有那個(gè)有趣。 This story is _ _ _ that one. less interesting than Fill the blanks. A + 謂語 + 比較級 + than +B Conclusion ：比較級的句子結(jié)構(gòu)： Oral Translation ? 1你認(rèn)為英語比數(shù)學(xué)簡單嗎 ? Do you think English is easier t

12、han math? ? 2 這個(gè)相機(jī)比那個(gè)相機(jī)貴。 This camera is more expensive than that one. ? 3 瑪麗比吉姆學(xué)習(xí)努力。 Mary studies harder than Jim. ? 4 我比我姐姐跳得遠(yuǎn)。 I jumped farther than my sister A + 謂語 + 比較級 + than +B Lets play a game: 開火車 You must compare yourself with someone in our class. (e.g age, height, weight, hair length )

13、or other things (e.g book, watch, pen, school bag ) 如果你們組有任何人掉鏈，都會被扣掉一 個(gè)A。整組都接上，將會得到4A. eg: Im fatter than more expensive lighter Complete the conversation below and on page 40 with the comparative of the adjectives from the box. heavier smaller bigger S1: _, Canada or China? (country/big) S2: _. As

14、k and answer questions using the following information. The first one has been done for you. (country/big) Canada Canada China China Hong Kong Shanghai the Yellow River the Yangtze River Hainan Island Taiwan Island Mountain Tai Yellow Mountain (city/big) (river/long) (island/large) (mountain/high) S

15、1: _,Cananda or China? (country/big) S2: _. Ask and answer questions using the following information. The first one has been done for you. The red laptop is the smallest among/of the three. When we compare more than two people or things, we use the superlative of adjectives. Grammar B The Grammar B

16、The superlative of adjectives superlative of adjectives ￥6,000 ￥4,600 ￥7,500 The red laptop is the smallest among/of the three, but it is _. the most expensive How do we form the superlative of adjectives? -est most the The dog is _ _the mouse. The horse is _ _ _ all. The boy is _ _the man. The baby

17、 is _ _ the three . big bigger biggest young younger youngest bigger than the biggest of younger than the youngest of Jim Li Lei Tom Li Lei is _ _Tom. Jim is _ _ _our class ￥30 ￥20 ￥10 The yellow coat is _ _the purple one. The brown coat is _ _ _ the three. taller than the tallest in cheaper than th

18、e cheapest of The horse is the biggest of all. The baby is the youngest of the three. The brown coat is the cheapest of the three. Jim is the tallest in our class. 主語 + be + the + 最高級 + of / in 形容詞最高級句式的結(jié)構(gòu)： 注意：形容詞最高級前一定要用 the. 最高級后面可用 in, of等短語來說明比較圍。 the superlative of adjectives 最高級形式 例詞 單音節(jié) 形容詞 大

19、多數(shù)單音節(jié)形 容詞 + -est high highest small smallest 以-e結(jié)尾 + -st large largest wide widest 一個(gè)元音 + 一 個(gè)輔音 雙寫輔音字母，再 加-est big biggest hot hottest 雙音節(jié) 形容詞 以-y或-ly結(jié)尾 去掉y，再加-iest happy happiest silly silliest 以非重讀元音、 /l/或/R(r)/結(jié)尾 + -est(-st) clever cleverest simple simplest 以-ful，-less，- ed，-ing結(jié)尾 most + 形容詞原級 ca

20、reful most careful boring most boring 多音節(jié) 形容詞 含三個(gè)或三個(gè)以 上音節(jié) most + 形容詞原級 difficult most difficult popular most popular The dog is _ _the mouse. The horse is _ _ _ all. The boy is _ _the man. The baby is _ _ the three . big bigger biggest young younger youngest bigger than the biggest of younger than t

21、he youngest of Jim Li Lei Tom Li Lei is _ _Tom. Jim is _ _ _our class ￥30 ￥20 ￥10 The yellow coat is _ _the purple one. The brown coat is _ _ _ the three. taller than the tallest in cheaper than the cheapest of David: Id like to see some of your cameras. Salesman: Certainly. This is the most expensi

22、ve model. This is the cheapest model. This is the newest and lightest model. a b c B1 David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement. (1)_ (2)_ (3)_ Tony: Did they show you any cameras? David: Yes. The (1)_model is (2)_. The (3)_mode

23、l costs (4)_. The (5)_model was made in (6)_. The (7)_model weighs (8)_. expensive light old small smallest 99.8 mm x 56.4 mm x 24.5 mm most expensive oldest lightest ￥ 3,589 2010 170 g B2 David told his friend Tony about his shopping trip. Complete Davids sentences with the superlative of the adjec

24、tives from the box. S1: Which is the biggest, the Earth, the Moon or the Sun? S2: The Sun is the biggest. the Earth, the Moon or the Sun? (big) a bee, a butterfly or an ant? (small) iron, silver or gold? (valuable) a bear, a whale or an elephant? (heavy) a spaceship, a plane or a train? (fast) Ask a

25、nd answer questions using the following information. The first one has been done for you. More practise 1. My sister is _ than Richard. (old) 2. Is football _ than volleyball? (exciting) 3. I think she looks _ than in the photo. (pretty) 4. Can you walk _ than a young man? (far) 5. In summer it is much _ in Wuhan than in Beijing. (hot) 6. Tom is _ boy in our class. (old) older more exciting prettier farther hotter the oldest 7. It was the _ day of his life. (bad) 8. Which is _, Room 201 or Room 108?